@misc{indiciaee5e10e5fe967,
  title = {Letter: Some pitfalls when measuring X-ray quality.},
  author = {G M Ardran and H E Crooks},
  year = {1973},
  doi = {10.1259/0007-1285-46-551-1010-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/4761134/},
  note = {Source identifier: 4761134}
}