TY  - RPRT
TI  - Letter: Electron back-scattering from lead in a perspex phantom.
AU  - F Nüsslin
PY  - 1975
DO  - 10.1259/0007-1285-48-576-1041
UR  - https://pubmed.ncbi.nlm.nih.gov/814946/
ID  - 814946
ER  -