@misc{indiciae2e78588feab2,
  title = {Photon shielding for 241Am surface and point sources.},
  author = {J C Courtney},
  year = {1992},
  doi = {10.1097/00004032-199208000-00013},
  url = {https://pubmed.ncbi.nlm.nih.gov/1399623/},
  note = {Source identifier: 1399623}
}