@misc{indiciae019ae1cf4b58,
  title = {Radiography with protons.},
  author = {J A Cookson},
  year = {1974},
  doi = {10.1007/bf00599915},
  url = {https://pubmed.ncbi.nlm.nih.gov/4602272/},
  note = {Source identifier: 4602272}
}