@misc{indiciaec2fb925617e3,
  title = {A punch card system for processing data from stapedectomy operations.},
  author = {H Ludman},
  year = {1967},
  doi = {10.1017/s0022215100066809},
  url = {https://pubmed.ncbi.nlm.nih.gov/6017319/},
  note = {Source identifier: 6017319}
}