TY  - RPRT
TI  - Monte Carlo source model for photon beam radiotherapy: photon source characteristics.
AU  - Michael K Fix
AU  - Paul J Keall
AU  - Kathryn Dawson
AU  - Jeffrey V Siebers
PY  - 2004
DO  - 10.1118/1.1803431
UR  - https://pubmed.ncbi.nlm.nih.gov/15587664/
ID  - 15587664
ER  -