TY  - RPRT
TI  - Calibration errors in digital subtraction radiography.
AU  - R L Webber
AU  - U E Ruttimann
AU  - T J Heaven
PY  - 1990
DO  - 10.1111/j.1600-0765.1990.tb00915.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2145412/
ID  - 2145412
ER  -