Tho, Do Xuan, and Nguyen Van Khang. “On the Parametric Transverse Vibrations of Continuous Beam on Intermediate Elastic Supports under the Action of Moving Body”. Vietnam Journal of Mechanics 17, no. 4 (December 31, 1995): 42–48. Accessed May 4, 2024. https://vjs.ac.vn/index.php/vjmech/article/view/10147.