@article{Lehmann1997,
  author    = {Lehmann, Waldemar},
  title     = {Aphasie, Dysarthrie},
  year      = {1997},
  language  = {de}
}
@article{Lehmann1997,
  author    = {Lehmann, Waldemar},
  title     = {M{\"o}glichkeiten der integrativen Sprachf{\"o}rderung von Sch{\"u}lern mit spastischer Dysarthrie},
  issn      = {0945 - 7968},
  year      = {1997},
  language  = {de}
}
@article{Lehmann1998,
  author    = {Lehmann, Waldemar},
  title     = {M{\"o}glichkeiten der Sprachf{\"o}rderung bei spastischer Dysarthrie},
  year      = {1998},
  language  = {de}
}