“…For recent results, generalizations and refinements related to HermiteHadamard inequality see [1,2,3,5,8,9,10,11,12,13,14,15,16,25,26,19,20,21,22,27,28,30] and the references given therein. In 1998, Dragomir and Agarwal proved the following lemma and established some significant results for the class of differentiable convex mappings which are closely annexed with Hadamard's inequality.…”