Muhammad, M. O., and A. Rafeeq. “Existence Solutions of ABC-Fractional Differential Equations With Periodic and Integral Boundary Conditions”. Journal of Scientific Research 14, no. 3 (September 1, 2022): 773–784. Accessed February 4, 2023. https://www.banglajol.info/index.php/JSR/article/view/58210.