@misc{indiciae729af47fe982,
  title = {A variable-depth motorized skull perforator. Technical note.},
  author = {M D Heifetz},
  year = {1984},
  doi = {10.3171/jns.1984.61.3.0602},
  url = {https://pubmed.ncbi.nlm.nih.gov/6747701/},
  note = {Source identifier: 6747701}
}