• [1]

    John R Letaw et al.The Astrophysical Jourunl Supplement Series,1983,51:271-275[2]Pearlste in S.Astrophysical Jourunl,1989,346:1049-1060[3]Shen Qingbiao.INDC(CPR)-020.Vienna:International Atomic Energy Agency,1991.[4]Ma Yinqun,ZhuangY ouxiang.Atomic Energy Sciencc and Technology(in chinese),1997,31(6):493-498(马引群,庄友祥。原子能科学技术。,1997.31(6):493.-498)