Fractional Differential Calculus · Volume 5, Issue 1 An Opial-type integral inequality and exponentially convex functions 05-03 Pages 25-42 DOI 10.7153/fdc-05-03 Downloads Short PDF Full PDF PNG Authors Maja Andrić Ana Barbir Sajid Iqbal Josip Pečarić Keywords Cauchy mean value theorems exponential convexity Stolarsky means fractional integral fractional derivative Subject classes 26D10 26D15 26A33