@article{PennerWeissenbornWermkeetal.1999,
  author    = {Penner, Zvi and Weissenborn, J{\"u}rgen and Wermke, Kathleen and Wymann, Karin},
  title     = {Pr{\"a}vention, Fr{\"u}herkennung und Fr{\"u}hintervention bei Spracherwerbsst{\"o}rungen},
  year      = {1999},
  language  = {de}
}
@article{Weissenborn1999,
  author    = {Weissenborn, J{\"u}rgen},
  title     = {Pr{\"a}vention, Fr{\"u}herkennung und Fr{\"u}hintervention bei Spracherwerbsst{\"o}rungen},
  year      = {1999},
  language  = {de}
}
@article{HoehleWeissenborn1999,
  author    = {H{\"o}hle, Barbara and Weissenborn, J{\"u}rgen},
  title     = {Discovering Grammar : prosodic and morpho-syntactic aspects of rule formation in first language acquisition},
  year      = {1999},
  language  = {en}
}