@misc{indiciae91d702bf3032,
  title = {Stereotactic radiosurgery using the 201 cobalt-60 source gamma knife.},
  author = {R J Coffey and L D Lunsford},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2136178/},
  note = {Source identifier: 2136178}
}