Medical accelerator safety considerations: report of AAPM Radiation Therapy Committee Task Group No. 35.
Purdy JA, Biggs PJ, Bowers C, Dally E, Downs W, Fraass BA, Karzmark CJ, Khan F, Morgan P, Morton R, et al. Medical accelerator safety considerations: report of AAPM Radiation Therapy Committee Task Group No. 35. Med Phys. 1993 Jul-Aug; 20(4):1261-75.