@misc{indiciae292828f9cc52,
  title = {Determination of half-value layer.},
  author = {E D TROUT and J P KELLEY and A C LUCAS},
  year = {1959},
  doi = {10.1148/73.1.107b},
  url = {https://pubmed.ncbi.nlm.nih.gov/13668113/},
  note = {Source identifier: 13668113}
}