@misc{indiciae43f779dba266,
  title = {X rays: half-value layer range 0.5 mm-4.0 mm Cu.},
  author = {C W Smith and W H Sutherland},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6600118/},
  note = {Source identifier: 6600118}
}