@misc{Bontrup2018,
  author    = {Heinz-Josef Bontrup},
  title     = {Die wahren Kosten},
  booktitle = {Frankfurter Rundschau},
  url       = {http://www.fr.de/wirtschaft/gastwirtschaft/preise-die-wahren-kosten-a-1505451},
  institution = {Wirtschaftsrecht},
  type      = {contributiontoperiodical},
  year        = {2018},
}