Chen, Feixiang, and Yuming Feng. “NEW INEQUALITIES OF HERMITE-HADAMARD TYPE FOR FUNCTIONS WHOSE FIRST DERIVATIVES ABSOLUTE VALUES ARE S-CONVEX”. Italian Journal of Pure and Applied Mathematics 32 (August 22, 2014): 213–222. Accessed August 7, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/6220.