Cosmic ray composition and energy spectrum from 1–30 PeV using the 40-string configuration of IceTop and IceCube (Astroparticle Physics, 2012)

(untitled) - Abbasi, R; Abdou, Y; Ackermann, M; Adams, J; Aguilar, JA; Ahlers, M; Altmann, D; Andeen, K; Auffenberg, J; Bai, X; Baker, M; Barwick, SW; et al.