TY  - RPRT
TI  - A nonlinear model for predicting radiographic contrast.
AU  - R L Webber
AU  - H D Youmans
AU  - R N Nagel
PY  - 1977
DO  - 10.1016/0030-4220(77)90068-8
UR  - https://pubmed.ncbi.nlm.nih.gov/266160/
ID  - 266160
ER  -