Observation of J/ψ-pair production in pp collisions at √s=7 TeV (Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2012)

(untitled) - Aaij, R; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Alkhazov, G; Alvarez Cartelle, P; Alves, A; et al.