@misc{indiciae1a49c45e760c,
  title = {Radioactive Source Shielding Strategies},
  author = {Mcalpin, Jerry D.},
  year = {2019},
  doi = {10.2172/1499299},
  url = {https://www.osti.gov/biblio/1499299},
  note = {Source identifier: 1499299}
}