• [1]

    . Meegan C A et al. Nature, 1992, 355: 143-1452. Metzger M R et al. Nature, 1997, 387: 878-8803. MA Xin-Hua et al. HEP NP, 2003, 27(11): 973-977(in Chinese)(马欣华等. 高能物理与核物理, 2003, 27(11): 973-977)4. Surdo A. Proc.28th ICRC. Tsukuba, Japan, 2003. 5|85. McEnery J E et al. 1999, Astro-Ph-99105496. ZHOU Xun-Xiu. Proc. 28th ICRC. Tsukuba, Japan, 2003.2757-27607. Adriani O et al. Nucl. Instrum. Methods in Physics Re-search, 2002, A488(1-2): 209-2258. Dingus B L et al. Proc. 25th ICRC. Durban, South Afria,1997. 30-329. CUI Shu-Wang et al. HEP NP, 2005, 29(1): 62-67 (in Chinese)(崔树旺等. 高能物理与核物理, 2005, 29(1): 62-67)10. CHEN Xin et al. HEP NP, 2004, 28(10): 1094-1098(in Chinese)(陈欣等. 高能物理与核物理, 2004, 28(10): 1094-1098)11. Hurley K et al. Nature, 1994, 372: 652-661