İȘCAN, İmdat, and Mehmet KUNT. “Hermite-Hadamard Type Inequalities for Product of GA-Convex Functions via Hadamard Fractional Integrals”. Studia Universitatis Babeș-Bolyai Mathematica, vol. 62, no. 4, Dec. 2017, pp. 451–459, doi:10.24193/subbmath.2017.4.04.