@misc{indiciae5edbbfb8343a,
  title = {X-radiation spectra.},
  author = {J J Rechtien and E P Lautenschlager and B K Norling},
  doi = {10.1177/00220345720510052001},
  url = {https://pubmed.ncbi.nlm.nih.gov/4506560/},
  note = {Source identifier: 4506560}
}