TY  - RPRT
TI  - Electron linear accelerators for radiation therapy: history, principles and contemporary developments.
AU  - C J Karzmark
AU  - N C Pering
PY  - 1973
DO  - 10.1088/0031-9155/18/3/001
UR  - https://pubmed.ncbi.nlm.nih.gov/4610600/
ID  - 4610600
ER  -