Liangcai Z, Zheng F, Zhang A, Kai G. Dynamic Analysis of Test Frame of Railway Subgrade Dynamic Response Test System. Int. J. Onl. Eng. [Internet]. 2013 Oct. 22 [cited 2024 Apr. 26];9(S7):pp. 30-33. Available from: https://online-journals.org/index.php/i-joe/article/view/3190