Lien, Tran Van, and Le Thi Ha. “Dynamic Analysis of Functionally Graded Viscoelastic Beams on the Elastic Foundation under Multiple Moving Loads”. Vietnam Journal of Mechanics 47, no. 1 (March 12, 2025): 90–108. Accessed December 5, 2025. https://vjs.ac.vn/vjmech/article/view/22165.