Nguyễn Hoài Sơn, Nguyễn Duy Hùng, and Trần Thị trà Mi. “The Way of Building Modeling and Caculation the Dynamic of a 3D Frame by Finite Element Method”. Journal of Technical Education Science, vol. 8, no. 1, Apr. 2013, pp. 73-79, https://www.jte.edu.vn/index.php/jte/article/view/686.