TAWFIQ, Luma N. M.; HUSSEIN, Reem W. Efficient Semi-Analytic Technique for Solving Nonlinear Singular Initial Value Problems. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 27, n. 3, p. 513–522, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/316.. Acesso em: 22 nov. 2024.