TY  - RPRT
TI  - The head-scatter factor for small field sizes.
AU  - T C Zhu
AU  - B E Bjärngard
PY  - 1994
DO  - 10.1118/1.597256
UR  - https://pubmed.ncbi.nlm.nih.gov/8164590/
ID  - 8164590
ER  -