Upsilon production cross section in pp collisions at √s=7TeV - Khachatryan, V; Sirunyan, A; Tumasyan, A; Adam, W; Bergauer, T; Dragicevic, M; Erö, J; Fabjan, C; Friedl, M; Frühwirth, R; Ghete, V; Hammer, J; et al. (Physical Review D, 2011)