Cường, Bùi Công, Dương Thăng Long, and Hoàng Việt Long. “Two Approaches to the Nonlinear Functions Approximation Problem”. <i>Journal of Computer Science and Cybernetics</i> 22, no. 2 (July 23, 2012): 123–133. Accessed December 5, 2025. https://vjs.ac.vn/jcc/article/view/1401.