Nuclear parton distribution functions and energy-loss effect in the Drell-Yan reaction off nuclei C.-G. Duan, L.-H. Song, S.-H. Wang and G.-L. Li Eur. Phys. J. C, 39 2 (2005) 179-184 Published online: 15 February 2005 DOI: 10.1140/epjc/s2004-02074-1