Trong, Dang Xuan, and Nguyen Tien Khiem. “An Application of the Dynamic Stiffness Concept for Vibration of Three-Dimensional Cracked Overhead Crane”. <i>Vietnam Journal of Mechanics</i> 47, no. 1 (November 15, 2024): 72–89. Accessed November 8, 2025. https://vjmech.vast.vn/vjmech/article/view/21925.