@book{Mayer1997,
  author    = {Mayer, Claudia},
  title     = {Der Butt : Roman / G{\"u}nter Grass. Hrsg. von Claudia Mayer-Iswandy},
  publisher = {Steidl},
  address   = {G{\"o}ttingen},
  isbn      = {3-88243-489-9},
  pages     = {703 S.},
  year      = {1997},
  language  = {de}
}
@book{Mayer1997,
  author    = {Mayer, Claudia},
  title     = {Das Treffen in Telgte : eine Erz{\"a}hlung / G{\"u}nter Grass. Hrsg. von Claudia Mayer-Iswandy},
  publisher = {Steidl},
  address   = {G{\"o}ttingen},
  isbn      = {3-88243-490-2},
  pages     = {176 S.},
  year      = {1997},
  language  = {de}
}
@book{Siepmann1997,
  author    = {Siepmann, Thomas},
  title     = {Modeller for Value Systems},
  publisher = {Erasmus Universiteit Rotterdam},
  address   = {Rotterdam},
  year      = {1997},
  language  = {en}
}