Yang, Wen Gui. “Hermite-Hadamard Type Inequalities for (p1,h1)-(p2,h2)-Convex Functions on the Co-Ordinates”. Tamkang Journal of Mathematics 47, no. 3 (September 30, 2016): 289–322. Accessed April 18, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1958.