• Enforcement with heterogeneous cartels 

      Jensen, Sissel; Sørgard, Lars (Working paper;14/12, Working paper, 2012-07)
      The purpose of this article is to analyze the minimum fines needed in order to prevent price fixing when there is heterogeneity in the potential for a cartel overcharge across industries. We show that the incentive constraint ...
    • Two-part pricing, consumer heterogeneity and cournot competition 

      Jensen, Sissel; Sørgard, Lars (Working paper, Working paper, 2005-04)
      We analyze two-part tariffs in an oligopoly, where each firm commits to a quantity and a fixed fee prior to the determination of unit prices. In the case of homogeneous consumers, Harrison and Kline (2001) showed that the ...