In this paper some new inequalities are proved related to left hand side of Hermite-Hadamard inequality for the classes of functions whose derivatives of absolute values are $(\alpha ,m)-$convex.
"New Hadamard-type inequalities for functions whose derivatives are $(\alpha ,m)-$convex functions." Tbilisi Math. J. 7 (2) 61 - 72, 2014. https://doi.org/10.2478/tmj-2014-0017