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H\\\"affner, S.J. Nolan, S.J. Wagner, S. Kaufmann, S. Klepser, S. Krakau, S. Ohm, S. Pita, S. Raab, S. Rosier-Lees, S. Schwarzburg, S. Schwemmer, T. Bulik, T. Edwards, T. Garrigoux, The H.E.S.S. Collaboration: A. Abramowski, T.J.L. McComb, T. Kneiske, T. Lohse, T. Murach, T. Tavernier, T. Vuillaume, U. Katz, U. Menzler, U. Schwanke, V. Marandon, V. Sahakian, V. Zabalza, W. Domainko, W. Hofmann, W. Klu\\'zniak, Y.A. Gallant, Y. Becherini, Y. Cui, Y. 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