@misc{indiciae8aff39dd95ec,
  title = {Electron linear accelerators for radiation therapy: history, principles and contemporary developments.},
  author = {C J Karzmark and N C Pering},
  year = {1973},
  doi = {10.1088/0031-9155/18/3/001},
  url = {https://pubmed.ncbi.nlm.nih.gov/4610600/},
  note = {Source identifier: 4610600}
}