TY  - RPRT
TI  - The solid angle (geometry factor) for a spherical surface source and an arbitrary detector aperture
AU  - Favorite, Jeffrey A.
PY  - 2016
DO  - 10.1016/j.nima.2015.12.060
UR  - https://www.osti.gov/biblio/1239547
ID  - 1239547
ER  -