First-principles study of the structural and electronic properties of ultrathin silver nanowiresLiang-Cai Ma, Ling Ma, Xue-Ling Lin, You-Zhen Yang and Jian-Min ZhangEur. Phys. J. B, 88 12 (2015) 343DOI: https://doi.org/10.1140/epjb/e2015-60756-2