HASSAN, A. A.; AHMED, S. A. . Apply the Sturm-Liouville Problem With Green’s Function to Linear System. Communications in Mathematics and Applications, [S. l.], v. 12, n. 3, p. 699–710, 2021. DOI: 10.26713/cma.v12i3.1563. Disponível em: http://www.rgnpublications.com/journals/index.php/cma/article/view/1563. Acesso em: 1 may. 2024.