TY  - RPRT
TI  - Photon shielding for 241Am surface and point sources.
AU  - J C Courtney
PY  - 1992
DO  - 10.1097/00004032-199208000-00013
UR  - https://pubmed.ncbi.nlm.nih.gov/1399623/
ID  - 1399623
ER  -