MABOOD, Fazle; IDREES, Muhammad. Homotopy Perturbation Method and Seventh-Order Boundary Value Problems. International Journal of Applied Mathematical Research, [S. l.], v. 2, n. 1, p. 70–75, 2012. DOI: 10.14419/ijamr.v2i1.563. Disponível em: https://www.sciencepubco.com/index.php/ijamr/article/view/563.. Acesso em: 2 may. 2024.