TY  - RPRT
TI  - Quantitative proton tomography: preliminary experiments.
AU  - A M Cormack
AU  - A M Koehler
PY  - 1976
DO  - 10.1088/0031-9155/21/4/007
UR  - https://pubmed.ncbi.nlm.nih.gov/972921/
ID  - 972921
ER  -