[3] Stromberg J S, Martinez A A, Horwitz E M et al. Conformal high dose rate iridium-192 boost brachytherapy in locally advanced prostate cancer: superior prostate-specific antigen response compared with external beam treatment[J]. Cancer Journal from Scientific American, 3, 346-352(1997).
[7] LI Lei, ZENG Fansong, WU Xiaoli et al. A GEANT4 study for the dose rate distributions of a 60Co γ-rays irradiation facility[J]. Journal of Radiation Research and Radiation Processing, 31, 020501(2013).