@book{Schafer.1986,
  address = {Bergisch Gladbach},
  author = {Schäfer, Gunter},
  interhash = {c0e21b34f2c6a041a7ddd4a2415afc99},
  intrahash = {6a92f9d8629d8ee1ff7bf477aeae7e34},
  isbn = {3890120539},
  publisher = {Eul},
  series = {Reihe},
  title = {Entwurf logischer Datenstrukturen für konzeptionelle Schemata von Datenbanken},
  volume = 12,
  year = 1986
}