@article{LaackDuerselen1985,
  author    = {Laack, Walter van and D{\"u}rselen, L.},
  title     = {Neues Konzept zur zementlosen Prothesenverankerung},
  series = {Orthop{\"a}dische Praxis. 21 (1985), H. 11},
  journal   = {Orthop{\"a}dische Praxis. 21 (1985), H. 11},
  isbn      = {0030-588x},
  pages     = {874},
  year      = {1985},
  language  = {de}
}
@article{Laack1985,
  author    = {Laack, Walter van},
  title     = {Untersuchungen {\"u}ber die Druckverteilung durch Schienbeinschoner im Fußballsport},
  series = {Deutsche Zeitschrift f{\"u}r Sportmedizin. 36 (1985), H. 7},
  journal   = {Deutsche Zeitschrift f{\"u}r Sportmedizin. 36 (1985), H. 7},
  isbn      = {0371-3059},
  pages     = {203 -- 208},
  year      = {1985},
  language  = {de}
}