Luong, Nguyen Thi Hien, and Vuong Quang Giang. “Influence of Edge Crack on Frequencies of Thin Plate in Bending”. Vietnam Journal of Mechanics 27, no. 2 (June 29, 2005): 107–117. Accessed November 9, 2025. https://vjmech.vast.vn/vjmech/article/view/5720.