@misc{indiciaed67fd7125230,
  title = {Double shielding for radium operations.},
  author = {E Pantoja},
  year = {1970},
  doi = {10.1148/97.2.376},
  url = {https://pubmed.ncbi.nlm.nih.gov/5481143/},
  note = {Source identifier: 5481143}
}