Aziz Abdulkader, Nawal, and Nadia Adnan. “Study Boundary Problem With Integral Condition for Fractional Differential Equations”. Journal of Education and Science (JES) 29, no. 3 (September 1, 2020): 237–245. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/24029.