Pham TTC, Vo DT, Ngo TKY, Tran THY. Procedures to build some inequality problems from basic convex functions. Dong Thap University Journal of Science [Internet]. 2022 Aug. 11 [cited 2024 May 20];11(4):33-40. Available from: https://dthujs.vn/index.php/dthujs/article/view/201