Energy spectrum and elemental composition of cosmic rays in the PeV region H. Ulrich, R. Glasstetter, T. Antoni, W.D. Apel, F. Badea, K. Bekk, A. Bercuci, M. Bertaina, H. Blümer, H. Bozdog et al. (48 more) Eur Phys J C, 33 3 (2004) s944-s946 Published online: 03 February 2004 DOI: 10.1140/epjcd/s2004-03-1632-2