Mechanical properties of metallic thin films: theoretical approach Duong Dai Phuong, Nguyen Thi Hoa, Vu Van Hung, Doan Quoc Khoa and Ho Khac Hieu Eur. Phys. J. B, 89 3 (2016) 84 Published online: 28 March 2016 DOI: 10.1140/epjb/e2016-60583-y