Khiem, Nguyen Tien, and Phi Thi Hang. “A Novel Damage Index Extracted from Frequency Response of Cracked Timoshenko Beam Subjected to Moving Harmonic Load”. <i>Vietnam Journal of Mechanics</i> 44, no. 3 (September 30, 2022): 280–290. Accessed November 8, 2025. https://vjmech.vast.vn/vjmech/article/view/17546.