- 
								[1]
								Blümer J, Engel R, Hörandel J R. Prog. Part. Nucl. Phys.,2009, 63: 293 
- 
								[2]
								Kulikov G V, Khristiansen G B. J. Exp. Theor. Phys., 1958,35: 635 
- 
								[3]
								Ptuskin V S, Rogovaya S I, Zirakashvili V N et al. Astron. Astrophys., 1993, 268: 726 
- 
								[4]
								Candia J, Roulet E, Epele L N. J. High Energy Phys., 2002,12: 33 
- 
								[5]
								Berezhko E G, Ksenofontov L T. J. Exp. Theor. Phys., 1999,89: 391 
- 
								[6]
								Stanev T, Biermann P L, Gaisser T K. Astron. Astrophys.,1993, 274: 902 
- 
								[7]
								Jokipii J R. Astrophys. J., 1982, 255: 716 
- 
								[8]
								Jokipii J R. Astrophys. J., 1987, 313: 842 
- 
								[9]
								Kobayakawa K, Honda Y S, Samura T. Phys. Rev. D, 2002,66: 083004 
- 
								[10]
								Völk H J, Zirakashvili V N. Astron. Astrophys., 2004, 417: 807 
- 
								[11]
								Hillas A M. J. Phys. G, 2005, 31: 95 
- 
								[12]
								Gaisser T K. Astropart. Phys., 2012, 35: 801 
- 
								[13]
								Bhadra A. Proc. Int. Cosmic Ray Conf., 2005, 3: 117 
- 
								[14]
								Erlykin A, Martirosov R, Wolfendale A. CERN Courier, 2011,51(1): 21 
- 
								[15]
								Wefel J P, Adams J H, Ahn H S et al. Proc. Int. Cosmic Ray Conf., 2005, 3: 105 
- 
								[16]
								Seo E S, Ahn H S, Allison P et al. Proc. Int. Cosmic Ray Conf.,2005, 3: 101 
- 
								[17]
								Ave M, Boyle P J, Gahbauer F et al. Astrophys. J., 2008, 678:262 
- 
								[18]
								Bartoli B, Bernardini P, BI X J et al. Chin. Phys. C, 2014, 38:045001 
- 
								[19]
								Amenomori M, BI X J, CHEN D et al. Astrophys. J. , 2008,678: 1165 
- 
								[20]
								Ogio S, Kakimoto F, Kurashina Y et al. Astrophys. J., 2004,612: 268 
- 
								[21]
								Yoon Y S, Ahn H S, Allison P S et al. Astrophys. J., 2011, 728:122 
- 
								[22]
								Bartoli B, Bernardini P, BI X J et al. arXiv:astroph. HE/1502.03164 
- 
								[23]
								Blandford R, Eichler D. Phys. Rept., 1987, 154: 1 
- 
								[24]
								Cesarsky C J. Annu. Rev. Astron. Astrophys., 1980, 18: 289 
- 
								[25]
								Letaw J R, Silberberg R, Tsao C H. Astrophys. J., 1993, 414:601 
- 
								[26]
								Ahn H S, Allison P, Bagliesi M G et al. Astrophys. J., 2009,707: 593 
- 
								[27]
								Bartoli B, Bernardini P, BI X J et al. Phys. Rev. D, 2012, 85:092005 
- 
								[28]
								Shibata M, Katayose Y, HUANG J et al. Astrophys. J., 2010,716: 1076 
- 
								[29]
								Lewis A, Bridle S. Phys. Rev. D, 2002, 66: 103511 
- 
								[30]
								LIU J, YUAN Q, BI X J et al. Phys. Rev. D, 2012, 85: 043507 
- 
								[31]
								Antoni T, Apel W D, Badea A F et al. Astropart. Phys., 2005,24: 1 
- 
								[32]
								Apanasenko A V, Sukhadolskaya V A, Derbina V A et al. Astropart. Phys., 2001, 16: 13 
- 
								[33]
								Asakimori K, Burnett T H, Cherry M L et al. Astrophys. J. ,1998, 502: 278 
- 
								[34]
								Glasmacher M A K, Catanese M A, Chantell M C et al. Astropart. Phys., 1999, 10: 291 
- 
								[35]
								Fowler J W, Fortson L F, JUI C C H et al. Astropart. Phys.,2001, 15: 49 
- 
								[36]
								Hörandel J R. Proc. Int. Cosmic Ray Conf., 2001, 1: 71 
- 
								[37]
								Bird D J, Corbato S C, DAI H Y et al. Phys. Rev. Lett., 1993,71: 3401 
- 
								[38]
								Hörandel J R. Astropart. Phys., 2004, 21: 241 
- 
								[39]
								Malkov M A, O'C Drury L. Rep. Prog. Phys., 2001, 64: 429 
- 
								[40]
								Reynolds S P. Annu. Rev. Astron. Astrophys., 2008, 46: 89