@book{BoninGrawertTolkiehnetal.2000,
  author    = {Bonin, Peter-Leonhard and Grawert, Achim and Tolkiehn, G{\"u}nter-Ulrich and Wagner, Dieter},
  title     = {Kooperation im Bauhandwerk : Ergebnisse und Probleme des Modellprojekts 'Bietergemeinschaften von Bauhandwerksbetrieben'},
  publisher = {Blunk},
  address   = {Berlin},
  isbn      = {3-934445-04-7},
  pages     = {177 S.},
  year      = {2000},
  language  = {de}
}
@book{WagnerGrawert2000,
  author    = {Wagner, Dieter and Grawert, Achim},
  title     = {Betriebliche Sozialleistungspolitik},
  series = {AKAD},
  journal   = {AKAD},
  publisher = {Akad, Hochschule f{\"u}r Berufst{\"a}tige GmbH},
  address   = {Stuttgart},
  isbn      = {3-89828-128-0},
  pages     = {54 S.},
  year      = {2000},
  language  = {de}
}