KADHEM, H. S.; HASAN, S. Q. Solving Some Fractional Partial Differential Equations by Invariant Subspace and Double Sumudu Transform Methods. Ibn AL- Haitham Journal For Pure and Applied Sciences, [S. l.], v. 33, n. 3, p. 127–139, 2020. DOI: 10.30526/33.3.2485. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/2485. Acesso em: 25 may. 2022.