@article{WeissenbornPennerSchoenberger1994,
  author    = {Weissenborn, J{\"u}rgen and Penner, Zvi and Sch{\"o}nberger, Manuela},
  title     = {The acquisition of object placement in early German and Swiss German},
  year      = {1994},
  language  = {en}
}
@article{WeissenbornPenner1996,
  author    = {Weissenborn, J{\"u}rgen and Penner, Zvi},
  title     = {Strong continuity, parameter setting and the trigger hierarchy : on the acquisition of the DP in Bernese Swiss German and High German},
  year      = {1996},
  language  = {en}
}
@article{SchoenbergerPennerWeissenborn1997,
  author    = {Sch{\"o}nberger, Manuela and Penner, Zvi and Weissenborn, J{\"u}rgen},
  title     = {Object placement and early German grammar},
  year      = {1997},
  language  = {en}
}
@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{PennerHoehle2000,
  author    = {Penner, Zvi and H{\"o}hle, Barbara},
  title     = {Extremely early knowledge of language specific word-order},
  year      = {2000},
  language  = {en}
}
@article{PennerTracyWeissenborn2000,
  author    = {Penner, Zvi and Tracy, Rosemarie and Weissenborn, J{\"u}rgen},
  title     = {Where scrambling begins : triggering object scrambling at the early stage German and Bernese Swiss German},
  isbn      = {0-7923-6249-7},
  year      = {2000},
  language  = {en}
}