Nguyễn Ngọc H. Some q-fejér inequaliries for $$(M_\phi,M_\psi)$$ -convex functions. TNJS [Internet]. 2024 Feb. 29 [cited 2026 Sep. 15];18(01). Available from: https://tckhtn.ttn.edu.vn/index.php/tckh/article/view/441