@misc{indiciae6212449b3c0f,
  title = {Computational methods in beam therapy planning.},
  author = {J van de Geijn},
  year = {1972},
  doi = {10.1016/0010-468x(72)90026-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4205748/},
  note = {Source identifier: 4205748}
}