TY  - RPRT
TI  - Off-axis beam quality change in linear accelerator x-ray beams.
AU  - W F Hanson
AU  - L W Berkley
AU  - M Peterson
DO  - 10.1118/1.594677
UR  - https://pubmed.ncbi.nlm.nih.gov/6770240/
ID  - 6770240
ER  -