7Kraft G, Badura E, Becher W, et al. First Patients' Treatment at GSI Using Heavy-ion Beams. Proceedings of the European Particle Accelerator Conference, 1998.
8Li Qiang, Dai Zhongying, Yan Zheng, et al. Med Bio Eng Comput, 2007, 45:1 037.
9Kanai T, Endo M, Minohara S, etal. Int J Radiation Oncology Biol Phys, 1999, 44(1): 201.
10Kraemer M. Weyrather W K, Scholz M.. Technology in Cancer Research & Treatment, 2003, 2(5) : 427.