- [1]
E. Berger, S. R. Kulkarni, G. Pooley et al, Nature, 426:154-157(2003)
- [2]
G. Cusumano, V. Mangano, L. Angelini et al, Astrophys. J., 639 (1):316-322(2006)
- [3]
A. V. Kienlin, C. A. Meegan, W. S. Paciesas et al, Astrophys. J. Suppl. Ser., 211:13(2014)
- [4]
G. Kanbach, D. L. Bertsch, A. Favale et al, Space Sci. Rev., 49:69-84(1988)
- [5]
C. Meegan, G. Lichti, P. N. Bhat et al, Astrophys. J., 702:791-804(2009)
- [6]
M. Ackermann, M. Ajello, K. Asano et al, Science, 343:42-47(2014)
- [7]
R. Salvaterra, M. D. Valle, S. Campana et al, Nature, 461:1258-1260(2009)
- [8]
J. Aleksic, S. Ansoldi, L. A. Antonelli et al, MNRAS, 437(4):3103-3111(2014)
- [9]
V. A. Acciari, E. Aliu, T. Arlen et al, Astrophys. J., 743:62(2011)
- [10]
A. Abramowski, F. Aharonian, F. A. Benkhali et al, AA,565:A16(2014)
- [11]
B. Bartoli et al(ARGO-YBJ Collaboration), Astrophys. J., 794:82(2014)
- [12]
G. Aielli et al(ARGO-YBJ Collaboration), Astropart. Phys., 32:47-52(2009)
- [13]
X. X. Zhou, H. B. Hu and Q. Huang, Acta Phys. Sin., 58(8):5879-5885(2009) (in Chinese)
- [14]
A. U. Abeysekara, R. Alfaro, C. Alvarez et al, Astrophys. J., 800:78(2015)
- [15]
G. Aielli et al(ARGO-YBJ Collaboration), Astrophys. J., 699:1281-1287(2009)
- [16]
G. Aielli et al(ARGO-YBJ Collaboration), Nucl. Instrum. Meth. A, 562:92-96(2006)
- [17]
S. Agostinelli, J. Allison, K. Amako et al, Nuclear Instruments and Methods in Physics Research Section A,506 (3):250-303(2003)
- [18]
G. Aielli et al(ARGO-YBJ Collaboration), Astropart. Phys., 30(6):287-338(2009)
- [19]
Y. Q. Guo, H. B. Hu, N. Cheng et al, in Proceedings of the 31st International Cosmic Ray Conference, edited by M. Giller and J. Szabelski (Lodz:University of Lodz, 2009), p.0683
- [20]
X. X. Zhou, N. Cheng, H. B. Hu et al, HEP NP, 31(1):65-69(2007)
- [21]
X. X. Zhou et al(Tibet AS collaboration), in Proceedings of the 28th International Cosmic Ray Conference, edited by T. Kajita, Y. Asaoka, A. Kawachi et al(Tokyo:Universal Academy Press, 2003), p. 2757
- [22]
R. C. Gilmore, R. S. Somerville, J. R. Primack et al, Mon. Not. R. Astron. Soc, 422(4):3189-3207(2012)
- [23]
S. W. Cui, H. B. Hu, H. Y. Wang et al, HEP NP, 29(1):62-67(2005) (in Chinese)