Hermite-Hadamard type inequalities for s-convex and s-concave functions   via fractional integrals
  New identity for fractional integrals have been defined. By using of this identity, some new Hermite-Hadamard type inequalities for Riemann-Liouville fractional integral have been developed. Our results have some relationships with the result of Avci et al., proved in AKO. 
M.Emin Ozdemir, Merve Avci and Havva Kavurmaci
math.FA