@article{Andree2013,
  author    = {Kai Andree},
  title     = {A note on merger in mixed duopoly - Bertrand versus Cournot},
  journal   = {Journal of economics},
  volume    = {108},
  number    = {3},
  pages     = {291 -- 298},
  doi       = {10.1007/s00712-012-0280-x},
  year      = {2013},
}