@misc{indiciae66a6033aa44a,
  title = {A nonlinear model for predicting radiographic contrast.},
  author = {R L Webber and H D Youmans and R N Nagel},
  year = {1977},
  doi = {10.1016/0030-4220(77)90068-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/266160/},
  note = {Source identifier: 266160}
}