@misc{indiciae4b8f2d6042ca,
  title = {A beam width improving device for a 25 MV X ray beam.},
  author = {P J Biggs and W U Shipley},
  year = {1986},
  doi = {10.1016/0360-3016(86)90427-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3080388/},
  note = {Source identifier: 3080388}
}