@misc{indiciaea2d39af38f30,
  title = {The microscope in neurosurgery--technical improvements.},
  author = {H W Pia},
  year = {1972},
  doi = {10.1007/bf01406557},
  url = {https://pubmed.ncbi.nlm.nih.gov/4654070/},
  note = {Source identifier: 4654070}
}