Samraiz, Muhammad, Muhammad Arslan Afzal, Sajid Iqbal, and Artion Kashuri. “Opial-Type Inequalities for Generalized Integral Operators With Special Kernels in Fractional Calculus”. Communications in Mathematics and Applications 9, no. 3 (September 25, 2018): 421–431. Accessed May 3, 2024. http://www.rgnpublications.com/journals/index.php/cma/article/view/831.