@misc{indiciaec8405de8ea4b,
  title = {A reference system in clinical anesthesia.},
  author = {G Martens and C L Zapf},
  year = {1993},
  doi = {10.1007/bf01617030},
  url = {https://pubmed.ncbi.nlm.nih.gov/8345374/},
  note = {Source identifier: 8345374}
}