![Upper limit on the ultrahigh-energy photon flux from AGASA and Yakutsk data]()
Upper limit on the ultrahigh-energy photon flux from AGASA and Yakutsk dataRubtsov, G. I.; Dedenko, L. G.; Fedorova, G. F.; Fedunin, E. Yu.; Glushkov, A. V.; Gorbunov, D. S.; Makarov, I. T.; Pravdin, M. I.; Roganova, T. M.; Sleptsov, I. E.; Troitsky, S. V. · Physical Review D · 2006