Boulekhras, Amina, and Kacem Belghaba. “Shehu Variational Iteration Method For Solve Some Fractional Differential Equations”. Communications in Mathematics and Applications 13, no. 3 (November 29, 2022): 1207–1219. Accessed July 22, 2024. https://rgnpublications.com/journals/index.php/cma/article/view/1906.