TY  - RPRT
TI  - A technique for matching orthogonal megavoltage fields.
AU  - T J Williamson
PY  - 1979
DO  - 10.1016/0360-3016(79)90048-8
UR  - https://pubmed.ncbi.nlm.nih.gov/106031/
ID  - 106031
ER  -