SRINIVASARAO THOTA; SHIV DATT KUMAR. A Symbolic Method for Finding Approximate Solution of Neutral Functional-Differential Equations with Proportional Delays. Jordan Journal of Mathematics and Statistics, [S. l.], v. 14, n. 4, p. 671–689, 2025. Disponível em: https://jjms.yu.edu.jo/index.php/jjms/article/view/775. Acesso em: 18 aug. 2025.