@article{Laack1984,
  author    = {Laack, Walter van},
  title     = {Juvenile Osteochondronekrosen - Wesen und m{\"o}gliche Entstehungsursachen},
  series = {Zeitschrift f{\"u}r Allgemeinmedizin ; ZFA. 60 (1984)},
  journal   = {Zeitschrift f{\"u}r Allgemeinmedizin ; ZFA. 60 (1984)},
  isbn      = {0341-9835},
  pages     = {1432},
  year      = {1984},
  language  = {de}
}
@book{Laack1982,
  author    = {Laack, Walter van},
  title     = {Experimentelle Untersuchungen {\"u}ber die Wirksamkeit von Schienbeinschonern im Fußballsport},
  address   = {Aachen},
  pages     = {187 S. : Ill.; graph. Darst.},
  year      = {1982},
  language  = {de}
}