E. A. Rawashdeh, H. M. Jaradat, and Fadi Awawdeh. “Homotopy Analysis Method for Delay-Integro-Differential Equations”. Jordan Journal of Mathematics and Statistics, vol. 2, no. 1, May 2025, pp. 15-23, https://jjms.yu.edu.jo/index.php/jjms/article/view/1198.