Homotopy perturbation method with modified Riemann –Liouville derivative for solving fractional- time partial differential equations . University of Thi-Qar Journal of Science, [S. l.], v. 3, n. 2, p. 163–173, 2012. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/395.. Acesso em: 4 may. 2024.