@misc{indiciaef651c726d791,
  title = {A 4-MV CT scanner for radiation therapy: the prototype system.},
  author = {R G Simpson and C T Chen and E A Grubbs and W Swindell},
  doi = {10.1118/1.595102},
  url = {https://pubmed.ncbi.nlm.nih.gov/7110089/},
  note = {Source identifier: 7110089}
}