• Anatomy of cartel contracts 

      Hyytinen, Ari; Steen, Frode; Toivanen, Otto (Discussion paper;25/2012, Working paper, 2012-12)
      We study cartel contracts using data on 18 contract clauses of 109 legal Finnish manufacturing cartels. One third of the clauses relate to raising profits; the others deal with instability through incentive compatibility, ...
    • Cartels uncovered 

      Steen, Frode; Toivanen, Otto; Hyytinen, Ari (Discussion paper, Working paper, 2010-03)
      How many cartels are there? The answer is important in assessing the efficiency of competition policy. We present a Hidden Markov Model that answers the question, taking into account that often we do not know whether a ...
    • Hospital mergers : a spatial competition approach 

      Brekke, Kurt Richard; Siciliani, Luigi; Straume, Odd Rune (Discussion paper;8/2013, Working paper, 2013-04)
      Using a spatial competition framework with three ex ante identical hospitals, we study the effects of a hospital merger on quality, price and welfare. The merging hospitals always reduce quality, but the non-merging hospital ...
    • Hospital mergers with regulated prices 

      Brekke, Kurt Richard; Siciliani, Luigi; Straume, Odd Rune (Discussion paper;21/2014, Working paper, 2014-05)
      We study the effects of a hospital merger using a spatial competition framework with semialtruistic hospitals that invest in quality and expend cost-containment effort facing regulated prices. We find that the merging ...