-
[1]
K.Asakimori et al.,22nd ICRC,2(1991)57.[2]D.J.Bird et al.,Ap.J.,424(1994)494[3]T.K.Gaisser et al.,Phys.Rev.,D47(1993)1919.[4]D.Muller et al.,Ap.J.,374.(1991)356.[5]S.P.Swordy et al,Ap.J,403(1993)658.[6]G.Cunning et al.,Ap.J,236(1980)L71[7]J.Buckley et al.,Ap.J.,429(1994)736.[8]I.L,Rasussen.B.Peters,Nature,258(1975)412.[9]J.Wdowczyk,A.W.Wolfendale,Nature,281(1979)356.[10]L.OC.Drury23rd ICRC,Invited,Rapporteur Highlight Papers(1993)307.[11]J.Ormes,P.Freier,Ap,J.222(1978)471.[12]Chunxian Xu,19th ICRC,2(1985)314.[13]A.M.hillas,M.ouldridge,Nature,253(1975)609.[14]D.J.Bird et al,23rd ICRC,2(1993)51.[15]V.L.Ginzburg.v.s.Ptuskin,Rev.of Mod.Phys.,48(1976)161.[16]A.Lukasiak et al.Ap.J.,430(1994)L69.[17]R.Battiston et al,CERN/EP:No.111.1982.[18]A.Z.Dolginov,M.E.Katz,Physics Reports,239(1994)285.[19]W.R.Webber et al,Ap.J,429(1994)764[20]J.Buckley et al.Ap.J,429(1994)736.[21]J.F.Ormes.18th.ICRC,2(1983)187.[22]Chunxian Xu.Chinese Journal of Space Science,5(1985)123.[23]J.L.Puget.F.W.Stecker,Ap.J,191(1974)323.[24]F.W.Stecker,Phys.Rev.Lett.,35(1975)188.[25]J.R Jokipii,G.E. Morfill,Ap.J., 290(1985)L1.[26]P.L.Biermann,23rd ICRC,Invited,Rapporteur Highlight Papers (1993)45.