On Hermite-Hadamard Type Integral Inequalities for Functions Whose   Second Derivative are nonconvex
  In this paper, we extend some estimates of the right hand side of a Hermite- Hadamard type inequality for nonconvex functions whose second derivatives absolute values are \phi-convex, log-\phi-convex, and quasi-\phi-convex. 
Mehmet Zeki Sarikaya, Hakan Bozkurt and Mehmet Ey\"up Kiris
math.FA