H. Mahmood, Akram, اکرم, Sara F. Abdullah, and سارة. “Existence and Uniqueness of Mild Solution for Mixed Type of Integro-Differential Equation”. Journal of Education and Science (JES) 27, no. 4 (December 28, 2018): 161–167. Accessed August 4, 2025. https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17804.