Kien, Nguyen Dinh, and Do Quoc Quang. “Beam Element for Large Displacement Analysis of Elasto-Plastic Frames”. <i>Vietnam Journal of Mechanics</i> 26, no. 1 (April 1, 2004): 39–54. Accessed January 13, 2026. https://vjes.vast.vn/vjmech/article/view/5688.