HOMOTOPY PERTURBATION METHOD FOR SOLVING SPECIAL TYPES OF NONLINEAR FREDHOLM INTEGRO-DIFFERENTIAL EQUATIONS. Al-Nahrain Journal of Science, [S. l.], v. 13, n. 2, p. 219–224, 2010. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/1122.. Acesso em: 25 nov. 2024.