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Steppa, C. Thorpe-Morgan, C. van Eldik, D.A. Prokhorov, D.A. Sanchez, D. Berge, D. Glawion, D. Huber, D. Kostunin, D. Malyshev, D. Zargaryan, E. de Ona Wilhelmi, E. Kasai, E. Moulin, E.O. Ang\\\"uner, E. Ruiz Velasco, F. Aharonian, F. Ait Benkhali, F. Brun, F. Cangemi, F. Jankowsky, F. Leuschner, F. Rieger, F. Sch\\\"ussler, F. Werner, G. Cotter, G. Fichet de Clairfontaine, G. Fontaine, G. Giavitto, G. Lamanna, G. Mart\\'i-Devesa, G. Maurin, G. Peron, G. P\\\"uhlhofer, G. Rowell, H. Ashkar, H.E.S.S. Collaboration: H. Abdalla, H.M. Schutte, H. Prokoph, H. Rueda Ricarte, H. Salzmann, H. Sol, I. Jung-Richardt, I. Lypova, J.A. Hinton, J. Bolmont, J. Damascene Mbarubucyeye, J. Devin, J.F. Glicenstein, J. Mackey, J. Majumdar, J. Muller, J. Niemiec, J.N.S. Shapopi, J.-P. Ernenwein, J.-P. Lenain, J. Veh, J. Vink, K. Bernl\\\"ohr, K. Egberts, K. Katarzy\\'nski, K. Kosack, L. Giunti, L. Mohrmann, L. Olivera-Nieto, L. Stawarz, L. Sun, M. Backes, M. 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