ABOOD, H. J. . Solution of A System of Two Partial Differential Equations of the Second Order Using Two Series. Journal of Asian Scientific Research, [S. l.], v. 1, n. 8, p. 407–418, 2011. Disponível em: https://archive.aessweb.com/index.php/5003/article/view/3312. Acesso em: 3 jul. 2024.