@misc{indiciaefd656ee674f5,
  title = {Cobalt-60 teletherapy simulation device for simple treatment fields.},
  author = {W J Walker and J L Campbell and R J Carella},
  year = {1974},
  doi = {10.1088/0031-9155/19/2/008},
  url = {https://pubmed.ncbi.nlm.nih.gov/4445203/},
  note = {Source identifier: 4445203}
}