A, Dang Quang, and Le Tung Son. “Iterative Method for Solving a Boundary Value Problem for Biharmonic Type Equation”. Journal of Computer Science and Cybernetics 22, no. 3 (June 23, 2012): 229–234. Accessed April 28, 2025. https://vjs.ac.vn/jcc/article/view/1102.