An, Nguyen Thuc, Nguyen Dang To, and Nguyen Hung Son. “Longitudinal Shock of Two Elastic Bars With One Spherical End”. Vietnam Journal of Mechanics 15, no. 1 (March 30, 1993): 5–9. Accessed May 4, 2024. https://vjs.ac.vn/index.php/vjmech/article/view/15.01.