TY  - RPRT
TI  - Letter: Minimizing surface dose with medium Z electron shields.
AU  - J W Baum
AU  - L F Phillips
PY  - 1974
DO  - 10.1088/0031-9155/19/2/012
UR  - https://pubmed.ncbi.nlm.nih.gov/4445206/
ID  - 4445206
ER  -