@misc{indiciaef86535d9664e,
  title = {[Intervertebral disk endoprosthesis--development and current status].},
  author = {K Büttner-Janz and K Schellnack},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2198019/},
  note = {Source identifier: 2198019}
}