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One sells it to both retailers, while the other only supplies a single retailer. Retailers compete in prices. Retail bundling is profitable when the goods are close substitutes. Only then is competition so intense that the retailer uses bundling to relax competition both within and across product markets, despite an aggravation of the double marginalization problem. Our asymmetric market structure arises endogenously for the case of close substitutes. In this case, bundling reduces social welfare."}],"project":[{"_id":"1","name":"SFB 901: SFB 901"},{"_id":"2","name":"SFB 901 - A: SFB 901 - Project Area A"},{"name":"SFB 901 - A3: SFB 901 - Subproject A3","_id":"7"}],"citation":{"mla":"Endres-Fröhlich, Angelika Elfriede, et al. <i>The Impact of Product Differentiation on Retail Bundling in a Vertical Market</i>.","bibtex":"@book{Endres-Fröhlich_Hehenkamp_Heinzel, title={The Impact of Product Differentiation on Retail Bundling in a Vertical Market}, author={Endres-Fröhlich, Angelika Elfriede and Hehenkamp, Burkhard and Heinzel, Joachim} }","ama":"Endres-Fröhlich AE, Hehenkamp B, Heinzel J. <i>The Impact of Product Differentiation on Retail Bundling in a Vertical Market</i>.","ieee":"A. E. Endres-Fröhlich, B. Hehenkamp, and J. Heinzel, <i>The Impact of Product Differentiation on Retail Bundling in a Vertical Market</i>. .","apa":"Endres-Fröhlich, A. E., Hehenkamp, B., &#38; Heinzel, J. 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Universität Paderborn; 2022.","mla":"N., N. <i>Stabile Zuordnung mit Paaren - Der neue NRMP Algorithmus</i>. Universität Paderborn, 2022.","short":"N. N., Stabile Zuordnung mit Paaren - Der neue NRMP Algorithmus, Universität Paderborn, 2022.","chicago":"N., N. <i>Stabile Zuordnung mit Paaren - Der neue NRMP Algorithmus</i>. Universität Paderborn, 2022.","ieee":"N. N., <i>Stabile Zuordnung mit Paaren - Der neue NRMP Algorithmus</i>. Universität Paderborn, 2022.","apa":"N., N. (2022). <i>Stabile Zuordnung mit Paaren - Der neue NRMP Algorithmus</i>. 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N. <i>School Choice with Reserves and Quotas</i>. Universität Paderborn; 2022.","mla":"N., N. <i>School Choice with Reserves and Quotas</i>. Universität Paderborn, 2022.","chicago":"N., N. <i>School Choice with Reserves and Quotas</i>. Universität Paderborn, 2022.","short":"N. N., School Choice with Reserves and Quotas, Universität Paderborn, 2022.","ieee":"N. N., <i>School choice with reserves and quotas</i>. Universität Paderborn, 2022.","apa":"N., N. (2022). <i>School choice with reserves and quotas</i>. 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N., Organisation von Zeitbörsen, Universität Paderborn, 2022.","ieee":"N. N., <i>Organisation von Zeitbörsen</i>. Universität Paderborn, 2022.","apa":"N., N. (2022). <i>Organisation von Zeitbörsen</i>. Universität Paderborn.","bibtex":"@book{N._2022, title={Organisation von Zeitbörsen}, publisher={Universität Paderborn}, author={N., N.}, year={2022} }","ama":"N. N. <i>Organisation von Zeitbörsen</i>. Universität Paderborn; 2022.","mla":"N., N. <i>Organisation von Zeitbörsen</i>. Universität Paderborn, 2022."},"supervisor":[{"full_name":"Haake, Claus-Jochen","last_name":"Haake","first_name":"Claus-Jochen","id":"20801"}]},{"main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/10.1111/sjoe.12518"}],"language":[{"iso":"eng"}],"doi":"https://doi.org/10.1111/sjoe.12518","title":"Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining","year":"2022","author":[{"id":"20801","last_name":"Haake","first_name":"Claus-Jochen","full_name":"Haake, Claus-Jochen"},{"last_name":"Upmann","first_name":"Thorsten","full_name":"Upmann, Thorsten"},{"id":"72752","full_name":"Duman, Papatya","last_name":"Duman","first_name":"Papatya"}],"publication_identifier":{"eissn":["0347-0520"]},"publication_status":"published","date_updated":"2023-06-08T16:42:31Z","article_type":"original","intvolume":"       125","date_created":"2022-04-22T14:10:44Z","type":"journal_article","keyword":["Labour market negotiations","efficient bargains","Nash bargaining solution","sequential bargaining","restricted bargaining games"],"department":[{"_id":"205"},{"_id":"475"}],"issue":"2","publication":"Scandinavian Journal of Economics","abstract":[{"lang":"eng","text":"We analyse the two-dimensional Nash bargaining solution (NBS) by deploying\r\nthe standard labour market negotiations model of McDonald and Solow (1981).\r\nWe show that the two-dimensional bargaining problem can be decomposed into two\r\none-dimensional problems, such that the two solutions together replicate the solution\r\nof the two-dimensional problem if the NBS is applied.  The axiom of\r\nIndependence of Irrelevant Alternatives is shown to be crucial for this type\r\nof decomposability.  This result has significant implications for actual\r\nnegotiations because it allows for the decomposition of a multi-dimensional bargaining\r\nproblem into one-dimensional problems---and thus helps to facilitate real-world\r\nnegotiations."}],"page":"403-440","publisher":"Wiley","_id":"30940","funded_apc":"1","user_id":"20801","ddc":["330"],"volume":125,"status":"public","jel":["J52","J41","C78"],"has_accepted_license":"1","citation":{"ama":"Haake C-J, Upmann T, Duman P. Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining. <i>Scandinavian Journal of Economics</i>. 2022;125(2):403-440. doi:<a href=\"https://doi.org/10.1111/sjoe.12518\">https://doi.org/10.1111/sjoe.12518</a>","bibtex":"@article{Haake_Upmann_Duman_2022, title={Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining}, volume={125}, DOI={<a href=\"https://doi.org/10.1111/sjoe.12518\">https://doi.org/10.1111/sjoe.12518</a>}, number={2}, journal={Scandinavian Journal of Economics}, publisher={Wiley}, author={Haake, Claus-Jochen and Upmann, Thorsten and Duman, Papatya}, year={2022}, pages={403–440} }","mla":"Haake, Claus-Jochen, et al. “Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining.” <i>Scandinavian Journal of Economics</i>, vol. 125, no. 2, Wiley, 2022, pp. 403–40, doi:<a href=\"https://doi.org/10.1111/sjoe.12518\">https://doi.org/10.1111/sjoe.12518</a>.","chicago":"Haake, Claus-Jochen, Thorsten Upmann, and Papatya Duman. “Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining.” <i>Scandinavian Journal of Economics</i> 125, no. 2 (2022): 403–40. <a href=\"https://doi.org/10.1111/sjoe.12518\">https://doi.org/10.1111/sjoe.12518</a>.","short":"C.-J. Haake, T. Upmann, P. Duman, Scandinavian Journal of Economics 125 (2022) 403–440.","apa":"Haake, C.-J., Upmann, T., &#38; Duman, P. (2022). Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining. <i>Scandinavian Journal of Economics</i>, <i>125</i>(2), 403–440. <a href=\"https://doi.org/10.1111/sjoe.12518\">https://doi.org/10.1111/sjoe.12518</a>","ieee":"C.-J. Haake, T. Upmann, and P. Duman, “Wage Bargaining and Employment Revisited: Separability and Efficiency in Collective Bargaining,” <i>Scandinavian Journal of Economics</i>, vol. 125, no. 2, pp. 403–440, 2022, doi: <a href=\"https://doi.org/10.1111/sjoe.12518\">https://doi.org/10.1111/sjoe.12518</a>."},"quality_controlled":"1","project":[{"name":"SFB 901 - A3: SFB 901 - Subproject A3","grant_number":"160364472","_id":"7"},{"_id":"2","name":"SFB 901 - A: SFB 901 - Project Area A"},{"_id":"1","grant_number":"160364472","name":"SFB 901: SFB 901"}]},{"date_updated":"2022-11-17T14:24:26Z","publication_status":"epub_ahead","status":"public","title":"Socio-legal systems and implementation of the Nash solution in Debreu–Hurwicz equilibrium","year":"2021","author":[{"first_name":"Claus-Jochen","last_name":"Haake","full_name":"Haake, Claus-Jochen","id":"20801"},{"full_name":"Trockel, Walter","first_name":"Walter","last_name":"Trockel"}],"publication_identifier":{"issn":["1434-4742","1434-4750"]},"doi":"10.1007/s10058-021-00278-z","user_id":"477","publisher":"Springer","_id":"29152","language":[{"iso":"eng"}],"funded_apc":"1","abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>In this article we combine Debreu’s (Proc Natl Acad Sci 38(10):886–893, 1952) social system with Hurwicz’s (Econ Design 1(1):1–14, 1994; Am Econ Rev 98(3):577–585, 2008) ideas of embedding a “desired” game form into a “natural” game form that includes all feasible behavior, even if it is “illegal” according to the desired form. For the resulting socio-legal system we extend Debreu’s concepts of a social system and its social equilibria to a socio-legal system with its Debreu–Hurwicz equilibria. We build on a more general version of social equilibrium due to Shafer and Sonnenschein (J Math Econ 2(3):345–348, 1975) that also generalizes the dc-mechanism of Koray and Yildiz (J Econ Theory 176:479–502, 2018) which relates implementation via mechanisms with implementation via rights structures as introduced by Sertel (Designing rights: invisible hand theorems, covering and membership. Tech. rep. Mimeo, Bogazici University, 2001). In the second part we apply and illustrate these new concepts via an application in the narrow welfarist framework of two person cooperative bargaining. There we provide in a socio-legal system based on Nash’s demand game an implementation of the Nash bargaining solution in Debreu–Hurwicz equilibrium.</jats:p>","lang":"eng"}],"project":[{"_id":"7","name":"SFB 901 - Subproject A3"},{"_id":"1","name":"SFB 901: SFB 901"},{"name":"SFB 901 - A: SFB 901 - Project Area A","_id":"2"}],"publication":"Review of Economic Design","citation":{"bibtex":"@article{Haake_Trockel_2021, title={Socio-legal systems and implementation of the Nash solution in Debreu–Hurwicz equilibrium}, DOI={<a href=\"https://doi.org/10.1007/s10058-021-00278-z\">10.1007/s10058-021-00278-z</a>}, journal={Review of Economic Design}, publisher={Springer}, author={Haake, Claus-Jochen and Trockel, Walter}, year={2021} }","ama":"Haake C-J, Trockel W. Socio-legal systems and implementation of the Nash solution in Debreu–Hurwicz equilibrium. <i>Review of Economic Design</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1007/s10058-021-00278-z\">10.1007/s10058-021-00278-z</a>","mla":"Haake, Claus-Jochen, and Walter Trockel. “Socio-Legal Systems and Implementation of the Nash Solution in Debreu–Hurwicz Equilibrium.” <i>Review of Economic Design</i>, Springer, 2021, doi:<a href=\"https://doi.org/10.1007/s10058-021-00278-z\">10.1007/s10058-021-00278-z</a>.","short":"C.-J. Haake, W. Trockel, Review of Economic Design (2021).","chicago":"Haake, Claus-Jochen, and Walter Trockel. “Socio-Legal Systems and Implementation of the Nash Solution in Debreu–Hurwicz Equilibrium.” <i>Review of Economic Design</i>, 2021. <a href=\"https://doi.org/10.1007/s10058-021-00278-z\">https://doi.org/10.1007/s10058-021-00278-z</a>.","ieee":"C.-J. Haake and W. Trockel, “Socio-legal systems and implementation of the Nash solution in Debreu–Hurwicz equilibrium,” <i>Review of Economic Design</i>, 2021, doi: <a href=\"https://doi.org/10.1007/s10058-021-00278-z\">10.1007/s10058-021-00278-z</a>.","apa":"Haake, C.-J., &#38; Trockel, W. (2021). Socio-legal systems and implementation of the Nash solution in Debreu–Hurwicz equilibrium. <i>Review of Economic Design</i>. <a href=\"https://doi.org/10.1007/s10058-021-00278-z\">https://doi.org/10.1007/s10058-021-00278-z</a>"},"type":"journal_article","department":[{"_id":"205"},{"_id":"475"}],"date_created":"2022-01-04T19:54:03Z"}]