[1] Lapostolle P M. Septier A L eds. Linear accelerators. Amsterdam : North Holland Publ Co , 1970. 173.
[2] Song Zhongheng . Atomic Energy Science and Technology (in Chinese), 1983, 17(1): 68.
[3] Ajzakij N I . Zh Ehsp & Teor Fiz (USSR), 1982, 52(9): 1315.
[4] Song Zhongheng . Atomic Energy Science and Technology (in Chinese), 1985, 19(2): 140.