@book{kalverkaemper1986,
  address = {Tübingen},
  editor = {Kalverkämper, Hartwig and Weinrich, Harald},
  interhash = {4674c9cc159115992f61907cb48f5af6},
  intrahash = {5d9eeab840570040c1421532421a990a},
  isbn = {3-87808-745-4},
  publisher = {Narr},
  series = {Forum für Fachsprachen-Forschung},
  title = {Deutsch als Wissenschaftssprache},
  url = {http://opac.bibliothek.uni-kassel.de/DB=1/PPN?PPN=004631471},
  volume = 3,
  year = 1986
}

@book{Pörksen2005,
  address = {Göttingen},
  author = {Pörksen, Uwe},
  interhash = {934769dd7fdadb1f7962634fc3854c14},
  intrahash = {94fcfafda2b2820cd391cb6cb21e299b},
  isbn = {3-89244-978-3},
  publisher = {Wallstein},
  series = {Valerio},
  title = {Die Wissenschaft spricht englisch?},
  url = {http://opac.bibliothek.uni-kassel.de/DB=1/PPN?PPN=128140461},
  volume = 1,
  year = 2005
}