TAGHIPOUR, R. Application of Homotopy Perturbation Method on Some Linear and Nonlinear Periodic Equations. International Journal of Natural and Engineering Sciences, [S. l.], v. 4, n. 3, p. 53–56, 2019. Disponível em: https://ijnes.org/index.php/ijnes/article/view/5. Acesso em: 14 nov. 2024.