Abstract Brand equity has been a perennial topic in marketing. Among all types of measures, price premium is widely accepted due to its simple yet efficient characteristics. However, there is some disagreement regarding whether this measure captures enough facets of brand equity and whether price premium is an appropriate measure to reflect the market position of a brand. With current technique developments, more sophisticated brand equity measures have been developed. A natural question arises as to whether more sophisticated measures are better than price premium. Using large-scale national scanner data covering 47 major U.S. markets, we employ the aggregated demand model to estimate a complex brand equity measure and compare it with price premium. Our results suggest that the simple price premium is consistent with the complex measure under certain conditions. We provide managers with suggestions regarding choosing the most appropriate brand equity measures to signify their brands’ values.
{"title":"Is the Simple Price Premium that Simple?","authors":"Yuying Shi","doi":"10.1515/roms-2018-0009","DOIUrl":"https://doi.org/10.1515/roms-2018-0009","url":null,"abstract":"Abstract Brand equity has been a perennial topic in marketing. Among all types of measures, price premium is widely accepted due to its simple yet efficient characteristics. However, there is some disagreement regarding whether this measure captures enough facets of brand equity and whether price premium is an appropriate measure to reflect the market position of a brand. With current technique developments, more sophisticated brand equity measures have been developed. A natural question arises as to whether more sophisticated measures are better than price premium. Using large-scale national scanner data covering 47 major U.S. markets, we employ the aggregated demand model to estimate a complex brand equity measure and compare it with price premium. Our results suggest that the simple price premium is consistent with the complex measure under certain conditions. We provide managers with suggestions regarding choosing the most appropriate brand equity measures to signify their brands’ values.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2018-0009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43627823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The aim of this study is to analyze the effect of unauthorized use of famous brand names on their brand equity dimensions. In addition, we explored the moderation effect of similarity between the unauthorized brand (junior brand) and the famous brand. An experimental design with four real famous brands and sixteen fictitious junior brands was applied to 617 undergraduate students from a large university in Ecuador. Hypotheses about the effect on brand equity dimensions and overall brand equity construct were tested using structural equation models. Results showed that awareness of a famous brand was not diluted by consumers’ exposure to junior brands. However, associations, perceived quality, loyalty and an overall construct of brand equity were diluted. There was evidence that similarity between famous and junior brands attenuated dilution. Therefore, considering that brand equity dimensions have desirable consequences on consumer behavior and firm value, this paper’s results highlight the importance of protecting brands against unauthorized use.
{"title":"Unauthorized Use of Famous Brands and Its Impact on Brand Equity Dimensions","authors":"Washington Macías, Julio Cerviño","doi":"10.1515/roms-2019-0005","DOIUrl":"https://doi.org/10.1515/roms-2019-0005","url":null,"abstract":"Abstract The aim of this study is to analyze the effect of unauthorized use of famous brand names on their brand equity dimensions. In addition, we explored the moderation effect of similarity between the unauthorized brand (junior brand) and the famous brand. An experimental design with four real famous brands and sixteen fictitious junior brands was applied to 617 undergraduate students from a large university in Ecuador. Hypotheses about the effect on brand equity dimensions and overall brand equity construct were tested using structural equation models. Results showed that awareness of a famous brand was not diluted by consumers’ exposure to junior brands. However, associations, perceived quality, loyalty and an overall construct of brand equity were diluted. There was evidence that similarity between famous and junior brands attenuated dilution. Therefore, considering that brand equity dimensions have desirable consequences on consumer behavior and firm value, this paper’s results highlight the importance of protecting brands against unauthorized use.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2019-0005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48880563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The present study hypothesized the concept of transaction utility that consumers receive from end-user piracy and assumes that it is positively associated with the difference between the price of original good and cost of copying the pirated product. We assume two groups of consumers – one enjoying transaction utility from piracy and the other not enjoying the same. The results show that a monopolist producing information-goods will adopt a low-price low-quality strategy in presence of transaction utility. An increase in the quality of the pirated product will also induce the firm to continue with the low-price–low-quality strategy. However, an increase in the proportion of the consumers not receiving transaction utility from piracy will increase the price and quality of the original good. In addition, with an increase in the average and marginal willingness-to-pay parameter of the consumers, the price, quality and profit of the original good will increase. The expected piracy rate is observed to be decreasing in transaction utility parameter when the upper boundary of willingness-to-pay parameter of the consumer is below a critical level.
{"title":"Transaction Utility of End-User Pirates – An Analysis","authors":"P. Basu, Tanmoyee Banerjee","doi":"10.1515/roms-2018-0042","DOIUrl":"https://doi.org/10.1515/roms-2018-0042","url":null,"abstract":"Abstract The present study hypothesized the concept of transaction utility that consumers receive from end-user piracy and assumes that it is positively associated with the difference between the price of original good and cost of copying the pirated product. We assume two groups of consumers – one enjoying transaction utility from piracy and the other not enjoying the same. The results show that a monopolist producing information-goods will adopt a low-price low-quality strategy in presence of transaction utility. An increase in the quality of the pirated product will also induce the firm to continue with the low-price–low-quality strategy. However, an increase in the proportion of the consumers not receiving transaction utility from piracy will increase the price and quality of the original good. In addition, with an increase in the average and marginal willingness-to-pay parameter of the consumers, the price, quality and profit of the original good will increase. The expected piracy rate is observed to be decreasing in transaction utility parameter when the upper boundary of willingness-to-pay parameter of the consumer is below a critical level.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2018-0042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47261812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract This paper uses a game-theoretic model to examine the role of reference price for firms that vary in their quality positioning in competing for customers. Reference prices provide consumers with additional components of utility. Building on previous research on the impact of consumer decision making on firm strategies, we focus on how firms choose their positioning when consumer utility is driven not only by acquisition utility but also by the transaction utility associated with the purchase and how this, in turn, affects firms’ pricing decisions and profits. Considering a competition between two firms, this paper shows that the firm with higher product quality provides greater discounts to consumers. We also show that when firms are allowed to set a high ‘regular’ price, product differentiation is greater between the firms, and price competition is less intense. Furthermore, under some conditions, the profits of both firms can be higher than the benchmark case (when the effects of transaction utility are ignored).
{"title":"Transaction Utility and Quality Choice","authors":"S. Sajeesh, Sangyoung Song","doi":"10.2139/ssrn.2595754","DOIUrl":"https://doi.org/10.2139/ssrn.2595754","url":null,"abstract":"Abstract This paper uses a game-theoretic model to examine the role of reference price for firms that vary in their quality positioning in competing for customers. Reference prices provide consumers with additional components of utility. Building on previous research on the impact of consumer decision making on firm strategies, we focus on how firms choose their positioning when consumer utility is driven not only by acquisition utility but also by the transaction utility associated with the purchase and how this, in turn, affects firms’ pricing decisions and profits. Considering a competition between two firms, this paper shows that the firm with higher product quality provides greater discounts to consumers. We also show that when firms are allowed to set a high ‘regular’ price, product differentiation is greater between the firms, and price competition is less intense. Furthermore, under some conditions, the profits of both firms can be higher than the benchmark case (when the effects of transaction utility are ignored).","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2139/ssrn.2595754","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43006600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract We investigate firms’ remanufacturing strategies for the case of a duopoly. On the one hand, remanufactured products cannibalize sales of new products of the same firm thereby hurting its profits. On the other hand, they can be part of a profitable marketing strategy that targets different customer preferences by providing a larger number of alternatives to customers. This paper studies the tradeoff between these effects and how it is influenced by competition. We develop a model where demand functions for new and remanufactured products of each firm are derived from utility maximization by a representative consumer. This allows us to capture preference and substitution effects between all offered products in the market. We discuss how equilibrium strategies are affected by factors such as competition, substitutability, production cost as well as remanufacturing cost. For example, when competitive intensity between new and new products, and remanufactured and remanufactured products, is (high), both (neither) firms offer remanufactured products in a symmetric equilibrium. If substitution between new and remanufactured products of the same firm is low, but the remanufactured product has a lower margin than the new product, firms can be worse off from remanufacturing.
{"title":"Strategic Remanufacturing under Competition","authors":"Zhongwen Ma, A. Prasad, S. Sethi","doi":"10.1515/roms-2019-0019","DOIUrl":"https://doi.org/10.1515/roms-2019-0019","url":null,"abstract":"Abstract We investigate firms’ remanufacturing strategies for the case of a duopoly. On the one hand, remanufactured products cannibalize sales of new products of the same firm thereby hurting its profits. On the other hand, they can be part of a profitable marketing strategy that targets different customer preferences by providing a larger number of alternatives to customers. This paper studies the tradeoff between these effects and how it is influenced by competition. We develop a model where demand functions for new and remanufactured products of each firm are derived from utility maximization by a representative consumer. This allows us to capture preference and substitution effects between all offered products in the market. We discuss how equilibrium strategies are affected by factors such as competition, substitutability, production cost as well as remanufacturing cost. For example, when competitive intensity between new and new products, and remanufactured and remanufactured products, is (high), both (neither) firms offer remanufactured products in a symmetric equilibrium. If substitution between new and remanufactured products of the same firm is low, but the remanufactured product has a lower margin than the new product, firms can be worse off from remanufacturing.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2019-0019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45613172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The authors empirically examine changes in household grocery budget allocation using IRI panel data for 2001, which track more than 4,000 panel households’ specific purchases of 31 product categories across supermarkets and drug stores, while recording total purchases for all other categories. They then use an almost ideal demand system (AIDS) model to measure the impact of household demographics on grocery budget allocation over the 31 product categories. The household demographic variables used include marital status, presence of children including small children, occupation, household size, age, and other demographics, while also using grocery-specific variables—total grocery spending, prices, and total grocery shopping frequency. They find household demographics especially occupation and family variables, do affect grocery budget allocation, and that their effect is exercised much more through prices than through the total grocery budget.
{"title":"Household Grocery Budgets—An Empirical Examination of Allocation Changes Due to Household Demographics","authors":"Giles D'souza, A. Tariq, A. Allaway","doi":"10.1515/roms-2016-0037","DOIUrl":"https://doi.org/10.1515/roms-2016-0037","url":null,"abstract":"Abstract The authors empirically examine changes in household grocery budget allocation using IRI panel data for 2001, which track more than 4,000 panel households’ specific purchases of 31 product categories across supermarkets and drug stores, while recording total purchases for all other categories. They then use an almost ideal demand system (AIDS) model to measure the impact of household demographics on grocery budget allocation over the 31 product categories. The household demographic variables used include marital status, presence of children including small children, occupation, household size, age, and other demographics, while also using grocery-specific variables—total grocery spending, prices, and total grocery shopping frequency. They find household demographics especially occupation and family variables, do affect grocery budget allocation, and that their effect is exercised much more through prices than through the total grocery budget.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2016-0037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66992974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract When firms advertise a vertically differentiated product attribute, they increase the weight consumers put on that attribute. This creates a spillover effect as one firm’s advertising can increase demand for other firms that also have the attribute. I develop a market share attraction model and find that as spillover increases, firms advertise less. Profit can be increasing or decreasing in spillover depending on the particular industry environment. Spillover lends a “public good” quality to advertising and firms free-ride in equilibrium. An advertising ban has an ambiguous effect on the profits of firms with the attribute, but always increases profits of firms without the attribute.
{"title":"Spillovers in Attribute Advertising","authors":"Steven Schmeiser","doi":"10.1515/roms-2014-0020","DOIUrl":"https://doi.org/10.1515/roms-2014-0020","url":null,"abstract":"Abstract When firms advertise a vertically differentiated product attribute, they increase the weight consumers put on that attribute. This creates a spillover effect as one firm’s advertising can increase demand for other firms that also have the attribute. I develop a market share attraction model and find that as spillover increases, firms advertise less. Profit can be increasing or decreasing in spillover depending on the particular industry environment. Spillover lends a “public good” quality to advertising and firms free-ride in equilibrium. An advertising ban has an ambiguous effect on the profits of firms with the attribute, but always increases profits of firms without the attribute.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2014-0020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66993202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract We determine efficient designs for choice-based conjoint analysis for the semi-parametric mixed logit model which captures latent consumer heterogeneity in a very flexible way. Different methods constructing one or multiple designs are tested. Additionally we apply Halton draws and determine a minimum potential design for prior draws to reduce computation times caused by accounting for latent heterogeneity of consumers. As main efficiency criteria for the construction of designs we consider measures related to D-error and entropy. As additional benchmarks we generate designs both randomly and by an approach which starts from orthogonal designs developed for linear models. We compare these alternative design procedures by simulating choices for different constellations on the basis of the semi-parametric mixed logit model. Using these simulated choices we estimate parameters of the semi-parametric mixed logit model in the next step. ANOVA with root mean squared error between estimated and true coefficient values as dependent variable shows that performance of design procedures depends on dissimilarity and segment size. Following a mean-standard deviation approach we determine which procedure should be used under different constellations or lack of prior information. Overall, either constructing ten designs based on DB-error or constructing one design based on entropy turn out to be preferable.
{"title":"A Monte Carlo Study of Design Procedures for the Semi-parametric Mixed Logit Model","authors":"A. Falke, H. Hruschka","doi":"10.1515/roms-2014-0002","DOIUrl":"https://doi.org/10.1515/roms-2014-0002","url":null,"abstract":"Abstract We determine efficient designs for choice-based conjoint analysis for the semi-parametric mixed logit model which captures latent consumer heterogeneity in a very flexible way. Different methods constructing one or multiple designs are tested. Additionally we apply Halton draws and determine a minimum potential design for prior draws to reduce computation times caused by accounting for latent heterogeneity of consumers. As main efficiency criteria for the construction of designs we consider measures related to D-error and entropy. As additional benchmarks we generate designs both randomly and by an approach which starts from orthogonal designs developed for linear models. We compare these alternative design procedures by simulating choices for different constellations on the basis of the semi-parametric mixed logit model. Using these simulated choices we estimate parameters of the semi-parametric mixed logit model in the next step. ANOVA with root mean squared error between estimated and true coefficient values as dependent variable shows that performance of design procedures depends on dissimilarity and segment size. Following a mean-standard deviation approach we determine which procedure should be used under different constellations or lack of prior information. Overall, either constructing ten designs based on DB-error or constructing one design based on entropy turn out to be preferable.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2014-0002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66992907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract This paper considers a dynamical system, which models a two-sided market. I evaluate the volume of users from each side of the market as a function of time. I formulate and prove theorems describing the long-term behavior and tendency of the market. Even though I consider generic attachment functions, I obtain a concrete result, formulated in terms of properties of attachment functions. This result is followed by examples (defined by the most popular in economics attachment functions), which illustrate behavior of the two-sided markets. I also simulate some two-sided market scenarios, showing how adjustments of attachment functions can influence the users’ dynamics. The dynamical system’s approach to the study of two-sided market problem allows natural generalization to multi-sided market, where one can utilize the same technique and obtain similar results in higher dimensions.
{"title":"Dynamics of Two-Sided Markets","authors":"Victoria Rayskin","doi":"10.1515/roms-2015-0001","DOIUrl":"https://doi.org/10.1515/roms-2015-0001","url":null,"abstract":"Abstract This paper considers a dynamical system, which models a two-sided market. I evaluate the volume of users from each side of the market as a function of time. I formulate and prove theorems describing the long-term behavior and tendency of the market. Even though I consider generic attachment functions, I obtain a concrete result, formulated in terms of properties of attachment functions. This result is followed by examples (defined by the most popular in economics attachment functions), which illustrate behavior of the two-sided markets. I also simulate some two-sided market scenarios, showing how adjustments of attachment functions can influence the users’ dynamics. The dynamical system’s approach to the study of two-sided market problem allows natural generalization to multi-sided market, where one can utilize the same technique and obtain similar results in higher dimensions.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2015-0001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66992794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract We investigate variation in aggregate consumer response sensitivities to the price, promotion and distribution elements of the marketing mix across US metropolitan markets. Primarily, three questions of research interest are examined – (i) the nature of the relationship between different aggregate response sensitivities and the implications therein, (ii) the usefulness of aggregate area-wide macroeconomic indicators such as inflation, unemployment and poverty in the context of a marketing problem, and (iii) the usefulness of geo-spatial information under a distribution-free approach. Beer category sales data across 49 major US metropolitan markets are analyzed. We find a pattern of strong inter-dependence among aggregate response sensitivities that indicates the existence of distinct, non-overlapping consumer segments. This enables a characterization of metropolitan market areas at an aggregate level. Ignoring inter-dependence mis-characterizes response sensitivity in two-thirds of the markets sampled. Further, on a standalone basis, neither area-wide economic indicators nor geo-spatial information help the analysis, but in conjunction, they vastly improve model fit (by almost 40%), explained variance (by over twice), parameter significance and consequently, insight.
{"title":"A Multimarket Analysis of Inter-dependent Consumer Response Sensitivities","authors":"Sudhir Voleti","doi":"10.1515/roms-2013-0013","DOIUrl":"https://doi.org/10.1515/roms-2013-0013","url":null,"abstract":"Abstract We investigate variation in aggregate consumer response sensitivities to the price, promotion and distribution elements of the marketing mix across US metropolitan markets. Primarily, three questions of research interest are examined – (i) the nature of the relationship between different aggregate response sensitivities and the implications therein, (ii) the usefulness of aggregate area-wide macroeconomic indicators such as inflation, unemployment and poverty in the context of a marketing problem, and (iii) the usefulness of geo-spatial information under a distribution-free approach. Beer category sales data across 49 major US metropolitan markets are analyzed. We find a pattern of strong inter-dependence among aggregate response sensitivities that indicates the existence of distinct, non-overlapping consumer segments. This enables a characterization of metropolitan market areas at an aggregate level. Ignoring inter-dependence mis-characterizes response sensitivity in two-thirds of the markets sampled. Further, on a standalone basis, neither area-wide economic indicators nor geo-spatial information help the analysis, but in conjunction, they vastly improve model fit (by almost 40%), explained variance (by over twice), parameter significance and consequently, insight.","PeriodicalId":35829,"journal":{"name":"Review of Marketing Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/roms-2013-0013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66992850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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