KERAMATI, B. An approach to the approximation of the inverse of a square matrix by He’s homotopy perturbation method. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 28, p. 117–124, 2011. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6006. Acesso em: 18 jul. 2026.