Dragomir, S. S. “Integral Inequalities of the Hermite – Hadamard Type for $K$ -Bounded Norm Convex Mappings”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 10 (October 25, 2016): 1330–1347. Accessed April 14, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/1924.