@misc{Bontrup2007,
  author    = {Heinz-Josef Bontrup},
  title     = {Der t{\"o}dliche Stachel der Konkurrenz},
  booktitle = {Frankfurter Rundschau},
  institution = {Wirtschaftsrecht},
  type      = {contributiontoperiodical},
  year        = {2007},
}