Dong Anh, Nguyen, and I. Elishakoff. “A New View of the Bubnov-Galerkin Method in the Linearization Context”. <i>Vietnam Journal of Mechanics</i> 34, no. 1 (March 1, 2012): 1–6. Accessed December 5, 2025. https://vjs.ac.vn/vjmech/article/view/423.