TY  - RPRT
TI  - Checking diagnostic x-ray beam quality.
AU  - G M Ardran
AU  - H E Crooks
PY  - 1968
DO  - 10.1259/0007-1285-41-483-193
UR  - https://pubmed.ncbi.nlm.nih.gov/5641959/
ID  - 5641959
ER  -