Homotopy Perturbation Method for Solving Generalized Riccati Differential Equation. Al-Nahrain Journal of Science, [S. l.], n. 2, p. 87–96, 2019. Disponível em: https://www.anjs.edu.iq/index.php/anjs/article/view/2059.. Acesso em: 20 may. 2024.