Periodic Solution of Caputo-Fabrizio Fractional Integro–differential Equation with Periodic and Integral Boundary Conditions. Eur. J. Pure Appl. Math. [Internet]. 2022 Jan. 31 [cited 2024 May 4];15(1):144-57. Available from: https://ejpam.com/index.php/ejpam/article/view/4247