Nuclear effects on J/ψ production in proton–nucleus collisions Chun-Gui Duan, Jian-Chao Xu and Li-Hua Song Eur. Phys. J. C, 67 1-2 (2010) 173-179 Published online: 02 March 2010 DOI: 10.1140/epjc/s10052-010-1270-1