Hermite-Hadamard type inequalities for harmonically convex functions on   the co-ordinates
  In recent years, new classes of convex functions have been introduced in order to generalize the results and to obtain new estimations. We also introduce the concept of harmonically convex functions on the co-ordinates. Also, we establish some inequalities of Hermit-Hadamard type as S.S. Dragomir' s results in Theorem 2 and other Hermit-Hadamard type inequalities for these classes of functions. 
Erhan Set, Imdat Iscan
math.CA