@article{Wegener1995,
  author    = {Wegener, Heide},
  title     = {Kasus und Valenz im nat{\"u}rlichen L2-Erwerb Deutsch},
  year      = {1995},
  language  = {de}
}
@article{Wegener1995,
  author    = {Wegener, Heide},
  title     = {Generative Morphologie und Deutsch als Fremd- und Zweitsprache},
  year      = {1995},
  language  = {de}
}
@article{Wegener1995,
  author    = {Wegener, Heide},
  title     = {Das Genus im DaZ-Erwerb : Beobachtungen an Kindern aus Polen, Rußland und der T{\"u}rkei},
  year      = {1995},
  language  = {de}
}
@article{Wegener1995,
  author    = {Wegener, Heide},
  title     = {The German plural and its acquisition in the light of markedness theory},
  year      = {1995},
  language  = {en}
}