First-principles study of molecular hydrogen adsorption on Mgn Zr (n = 1 ~ 11) clusters Chong He, YunLong Chen and Yong Sheng Eur. Phys. J. D, 73 5 (2019) 90 Published online: 07 May 2019 DOI: 10.1140/epjd/e2019-90521-6