A, Dang Quang, Truong Ha Hai, Nguyen Thanh Huong, and Ngo Thi Kim Quy. 2018. “Solving a Nonlinear Biharmonic Boundary Value Problem”. Journal of Computer Science and Cybernetics 33 (4):308-24. https://doi.org/10.15625/1813-9663/33/4/11066.