The, Vu Van. “Lower Bound on the Small Displacements of Impulsively Loaded Rigid-Plastically Anisotropic Structures”. <i>Vietnam Journal of Mechanics</i> 5, no. 3 (September 30, 1983): 25–32. Accessed January 2, 2026. https://vjs.ac.vn/vjmech/article/view/10435.