@misc{indiciaeb3c16fd9822e,
  title = {Some historical notes on Carl Pulfrich.},
  author = {S Christianson and H W Hofstetter},
  year = {1972},
  doi = {10.1097/00006324-197211000-00008},
  url = {https://pubmed.ncbi.nlm.nih.gov/4564035/},
  note = {Source identifier: 4564035}
}