A search for extragalactic sources of ultrahigh-energy cosmic rays

by Ivanov, A.A, Knurenko, S.P, Sleptsov, I.Ye
Source: 1. Proceedings of the 21st European cosmic ray symposium 1. Košice : Ústav experimentálnej fyziky Slovenskej akadémie vied, 2009 1. 9788096806058 1. S. 446-449