@misc{indiciae25ff9233e686,
  title = {A simple wedge filter technique for cobalt 60 therapy.},
  author = {J van de GEIJN},
  year = {1962},
  doi = {10.1259/0007-1285-35-418-710},
  url = {https://pubmed.ncbi.nlm.nih.gov/13947013/},
  note = {Source identifier: 13947013}
}