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Information sharing between vertical hierarchies. (2013). Piccolo, Salvatore ; Pagnozzi, Marco.
In: Games and Economic Behavior.
RePEc:eee:gamebe:v:79:y:2013:i:c:p:201-222.

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Cited: 22

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Cites: 31

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  1. On the optimality of information sharing between integrated and vertically separated competitors. (2023). Karako, Gulen ; Cerasi, Vittoria ; Battaggion, Maria Rosa.
    In: Southern Economic Journal.
    RePEc:wly:soecon:v:89:y:2023:i:4:p:1168-1195.

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  2. Price authority and information sharing with competing supply chains. (2023). Neven, Damien ; Piccolo, Salvatore ; Andreu, Enrique.
    In: International Journal of Industrial Organization.
    RePEc:eee:indorg:v:88:y:2023:i:c:s0167718723000085.

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  3. On the welfare effects of adverse selection in oligopolistic markets. (2023). Palermo, Alberto ; Goerke, Laszlo ; de Pinto, Marco.
    In: Games and Economic Behavior.
    RePEc:eee:gamebe:v:138:y:2023:i:c:p:22-41.

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  4. On the Welfare Effects of Adverse - Selection in Oligopolistic Markets. (2022). de Pinto, Marco ; Goerke, Lazlo ; Palermo, Alberto.
    In: IAAEU Discussion Papers.
    RePEc:iaa:dpaper:202202.

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  5. Price Authority and Information Sharing with Competing Principals. (2022). Piccolo, Salvatore ; Neven, Damien ; Andreu, Enrique.
    In: IHEID Working Papers.
    RePEc:gii:giihei:heidwp29-2022.

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  6. The value of transparency in dynamic contracting with entry. (2022). Pagnozzi, Marco ; Piccolo, Salvatore ; Karako, Gulen.
    In: International Journal of Industrial Organization.
    RePEc:eee:indorg:v:85:y:2022:i:c:s0167718722000522.

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  7. On the Welfare Effects of Adverse Selection in Oligopolistic Markets. (2022). Palermo, Alberto ; Goerke, Laszlo ; de Pinto, Marco.
    In: CESifo Working Paper Series.
    RePEc:ces:ceswps:_10003.

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  8. Bargaining with informational and payoff externalities. (2021). Drugov, Mikhail.
    In: Journal of Economics & Management Strategy.
    RePEc:bla:jemstr:v:30:y:2021:i:2:p:398-419.

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  9. Strategic interlocking directorates. (2020). CERASI, VITTORIA ; Battaggion, Maria Rosa.
    In: Journal of Economic Behavior & Organization.
    RePEc:eee:jeborg:v:178:y:2020:i:c:p:85-101.

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  10. On Competing Mechanisms under Exclusive Competition. (2018). campioni, eloisa ; Piaser, Gwenael ; Attar, Andrea.
    In: CEIS Research Paper.
    RePEc:rtv:ceisrp:441.

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  11. Endogenous interlocking directorates. (2018). CERASI, VITTORIA ; Battaggion, Maria Rosa ; Rosa, Battaggion Maria .
    In: Working Papers.
    RePEc:mib:wpaper:380.

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  12. On competing mechanisms under exclusive competition. (2018). Attar, Andrea ; Piaser, Gwenael ; Campioni, Eloisa.
    In: Games and Economic Behavior.
    RePEc:eee:gamebe:v:111:y:2018:i:c:p:1-15.

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  13. Transparency and Performance Evaluation in Sequential Agency. (2017). Ishihara, Akifumi ; Cato, Sususmu.
    In: Journal of Law, Economics, and Organization.
    RePEc:oup:jleorg:v:33:y:2017:i:3:p:475-506..

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  14. The strategic value of partial vertical integration. (2016). Fiocco, Raffaele.
    In: Working Papers.
    RePEc:urv:wpaper:2072/267267.

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  15. Contract Competition between Hierarchies, Managerial Compensation and Imperfectly Correlated Shocks. (2016). Etro, Federico ; Michela, Cella .
    In: Working Papers.
    RePEc:mib:wpaper:328.

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  16. Contract competition between hierarchies, managerial compensation and imperfectly correlated shocks. (2016). Etro, Federico ; Cella, Michela.
    In: Journal of Economics.
    RePEc:kap:jeczfn:v:118:y:2016:i:3:d:10.1007_s00712-016-0472-x.

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  17. Vagueness and information-sharing. (2016). Troya Martinez, Marta ; Troya-Martinez, Marta .
    In: Games and Economic Behavior.
    RePEc:eee:gamebe:v:100:y:2016:i:c:p:301-320.

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  18. The strategic value of partial vertical integration. (2016). Fiocco, Raffaele.
    In: European Economic Review.
    RePEc:eee:eecrev:v:89:y:2016:i:c:p:284-302.

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  19. On Competing Mechanisms under Exclusive Competition. (2015). campioni, eloisa ; attar, andrea ; Piaser, Gwenael.
    In: TSE Working Papers.
    RePEc:tse:wpaper:29906.

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  20. On Competing Mechanisms under Exclusive Competition. (2015). attar, andrea ; Piaser, Gwenael ; Campioni, Eloisa.
    In: Working Papers.
    RePEc:ipg:wpaper:2015-632.

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  21. The value of transparency in multidivisional firms. (2015). Ursino, Giovanni ; Tarantino, Emanuele ; Piccolo, Salvatore.
    In: International Journal of Industrial Organization.
    RePEc:eee:indorg:v:41:y:2015:i:c:p:9-18.

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  22. Bargaining with Informational Externalities in a Market Equilibrium. (2014). Drugov, Mikhail.
    In: CEPR Discussion Papers.
    RePEc:cpr:ceprdp:10021.

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References

References cited by this document

  1. Acquisti, A. ; Varian, H. Conditioning prices on purchase history. 2005 Mark. Sci.. 24 367-381

  2. Bennardo, A., Pagano, M., Piccolo, S., 2010. Multiple-bank lending, creditor rights and information sharing. Working paper.

  3. Bertoletti, P. ; Poletti, C. X-inefficiency, competition and market information. 1997 J. Ind. Econ.. 45 359-375

  4. Briley, M. ; Homchick, R. ; Singer, T. Information Sharing Among Health Care Providers: Antitrust Analysis and Practical Guide. 1994 American Bar Association: Chicago
    Paper not yet in RePEc: Add citation now
  5. Caillaud, B. ; Jullien, B. ; Picard, P. Competing vertical structures: precommitment and renegotiation. 1995 Econometrica. 63 621-646

  6. Calzolari, G. ; Pavan, A. On the optimality of privacy in sequential contracting. 2006 J. Econ. Theory. 130 168-204

  7. Cella, M., Etro, F., 2012. Contract competition and oligopolistic screening. Working paper.
    Paper not yet in RePEc: Add citation now
  8. Clarke, R. Collusion and the incentives for information sharing. 1983 Bell J. Econ.. 14 383-394

  9. Connor, J.M. Global Price Fixing: Our Customers Are the Enemy. 2001 Kluwer: Boston
    Paper not yet in RePEc: Add citation now
  10. Crémer, J. ; McLean, R. Full extraction of the surplus in Bayesian and dominant strategy auctions. 1988 Econometrica. 56 1247-1257

  11. Fried, D. Incentives for information production and disclosure in a duopolistic environment. 1984 Q. J. Econ.. 99 367-381

  12. Gal-Or, E. Information sharing in oligopoly. 1985 Econometrica. 53 329-343

  13. Gal-Or, E. Information transmission — Cournot and Bertrand equilibria. 1986 Rev. Econ. Stud.. 53 85-92

  14. Gromb, D. ; Martimort, D. Collusion and the organization of delegated expertise. 2007 J. Econ. Theory. 37 271-299

  15. Jansen, J. Information acquisition and strategic disclosure in oligopoly. 2008 J. Econ. Manag. Strategy. 17 113-148

  16. Laffont, J.J. ; Martimort, D. Mechanism design with collusion and correlation. 2000 Econometrica. 68 309-342

  17. Laffont, J.J. ; Martimort, D. The Theory of Incentives: The Principal–Agent Model. 2002 Princeton University Press: Princeton
    Paper not yet in RePEc: Add citation now
  18. Lizzeri, A. Information revelation and certification intermediaries. 1999 RAND J. Econ.. 30 214-231

  19. Maier, N. ; Ottaviani, M. Information sharing in common agency: when is transparency good?. 2009 J. Eur. Econ. Assoc.. 7 162-187

  20. Martimort, D. Exclusive dealing, common agency, and multiprincipals incentive theory. 1996 RAND J. Econ.. 27 1-31

  21. Novshek, W. ; Sonnenschein, H. Fulfilled expectations Cournot duopoly with information acquisition and release. 1982 Bell J. Econ.. 13 214-218

  22. Pagano, M. ; Jappelli, T. Information sharing in credit markets. 1993 J. Finance. 48 1693-1718

  23. Pagnozzi, M. ; Piccolo, S. Vertical separation with private contracts. 2012 Econ. J.. 122 173-207

  24. Raith, M. A general model of information sharing in oligopoly. 1996 J. Econ. Theory. 71 260-288

  25. Riordan, M. ; Sappington, D. Optimal contracts with public ex post information. 1988 J. Econ. Theory. 45 189-199

  26. Shapiro, C. Exchange of cost information in oligopoly. 1986 Rev. Econ. Stud.. 53 433-446

  27. Stern, L. ; El-Ansary, A. ; Coughlan, A. Marketing Channels. 1996 Prentice Hall: Upper Saddle River
    Paper not yet in RePEc: Add citation now
  28. Taylor, C. Consumer privacy and the market for customer information. 2004 RAND J. Econ.. 35 631-650

  29. Vives, X. Duopoly information equilibrium: Cournot and Bertrand. 1984 J. Econ. Theory. 34 71-94

  30. Vives, X. Oligopoly Pricing. 2000 MIT Press: Cambridge
    Paper not yet in RePEc: Add citation now
  31. Ziv, A. Information sharing in oligopoly: the truth-telling problem. 1993 RAND J. Econ.. 24 455-465

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