@misc{indiciaed5b3744b52a7,
  title = {Quantitative method of evaluating focused collimators.},
  author = {D J Wyper and F C Gillespie},
  year = {1971},
  url = {https://pubmed.ncbi.nlm.nih.gov/5580833/},
  note = {Source identifier: 5580833}
}