@misc{indiciae292a962fc2bd,
  title = {Cobalt 60 protection design.},
  author = {C B BRAESTRUP and R T MOONEY},
  year = {1955},
  doi = {10.1148/65.6.884},
  url = {https://pubmed.ncbi.nlm.nih.gov/13273655/},
  note = {Source identifier: 13273655}
}