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Market sharing agreements and collusive networks

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Author Info
Paul Belleflamme
Francis Bloch

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Abstract

We analyze reciprocal market sharing agreements by which firms commit not to enter each other's territory in oligopolistic markets and procurement auctions. The set of market sharing agreements defines a collusive network. We characterize stable collusive networks when firms and markets are symmetric. Stable networks are formed of complete alliances, of different sizes, larger than a minimal threshold. Typically, stable networks display fewer agreements than the optimal network for the industry and more agreements than the socially optimal network. When firms or markets are asymmetric, stable networks may involve incomplete alliances and be underconnected with respect to the social optimum. Copyright 2004 by the Economics Department Of The University Of Pennsylvania And Osaka University Institute Of Social And Economic Research Association.

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Article provided by Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association in its journal International Economic Review.

Volume (Year): 45 (2004)
Issue (Month): 2 (05)
Pages: 387-411
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Handle: RePEc:ier:iecrev:v:45:y:2004:i:2:p:387-411

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  1. Marco A. Marini, 2007. "An Overview of Coalitions and Networks Formation Models for Economic Applications," Working Papers 0707, CREI Università degli Studi Roma Tre, revised 2007. [Downloadable!]
  2. Ana, MAULEON & Huasheng, SONG & Vincent, VANNETELBOSCH, 2006. "Networks for Free Trade Agreements among Heterogeneous Countries," Discussion Papers (ECON - Département des Sciences Economiques) 2006029, Université catholique de Louvain, Département des Sciences Economiques. [Downloadable!]
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  3. Masaki Iimura & Seiji Murakoshi & Toru Hokari, 2007. "Subgame-perfect market sharing agreements," Economics Bulletin, Economics Bulletin, vol. 3(7), pages 1-14. [Downloadable!]
  4. Paolo Pin, 2006. "Eight Degrees of Separation," Working Papers 2006.78, Fondazione Eni Enrico Mattei. [Downloadable!]
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  5. Sudipta Sarangi & Robert P. Gilles, . "The Role of Beliefs and Confidence in Building Social Networks," Departmental Working Papers 2005-15, Department of Economics, Louisiana State University. [Downloadable!]
  6. Ana, MAULEON & JosŽ, SEMPERE-MONERRIS & Vincent, VANNETELBOSCH, 2005. "Networks of Manufacturers and Retailers," Discussion Papers (ECON - Département des Sciences Economiques) 2005036, Université catholique de Louvain, Département des Sciences Economiques. [Downloadable!]
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  7. Gilles, R.P. & Sarangi, S., 2004. "Social network formation with consent," Discussion Paper 70, Tilburg University, Center for Economic Research. [Downloadable!]
  8. Tim Hellmann & Berno Buechel, 2009. "Under-connected and Over-connected Networks," Working Papers 2009.38, Fondazione Eni Enrico Mattei. [Downloadable!]
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  9. Steffen Lippert & Giancarlo Spagnolo, 2004. "Networks of Relations," Discussion Papers 28, SFB/TR 15 Governance and the Efficiency of Economic Systems, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich. [Downloadable!]
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  10. Sudipta Sarangi & Robert P. Gilles, . "Stable Networks and Convex Payoffs," Departmental Working Papers 2005-13, Department of Economics, Louisiana State University. [Downloadable!]
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  11. Robert P. Gilles & Sudipta Sarangi, 2006. "Building Social Networks," Discussion Papers of DIW Berlin 642, DIW Berlin, German Institute for Economic Research. [Downloadable!]
  12. BELLEFLAMME, Paul & BLOCH, Francis, 2006. "Sustainable collusion on separate markets," CORE Discussion Papers 2006059, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE). [Downloadable!]
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  13. Marco Marini, 2007. "An Overview of Coalition & Network Formation Models for Economic Applications," Working Papers 0712, University of Urbino Carlo Bo, Department of Economics, revised 2007. [Downloadable!]
  14. Flavia Roldán, 2008. "Collusive networks in market sharing agreements in the presence of an antitrust authority," Economics Working Papers we085024, Universidad Carlos III, Departamento de Economía. [Downloadable!]
  15. Matthew O. Jackson, 2003. "A Survey of Models of Network Formation: Stability and Efficiency," Game Theory and Information 0303011, EconWPA. [Downloadable!]
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