Srinivasarao Thota, and Shiv Datt Kumar. “A Symbolic Method for Finding Approximate Solution of Neutral Functional-Differential Equations With Proportional Delays”. Jordan Journal of Mathematics and Statistics 14, no. 4 (May 18, 2025): 671–689. Accessed August 18, 2025. https://jjms.yu.edu.jo/index.php/jjms/article/view/775.