M. TAWFIQ, L. N.; I. GORIAL, I. . On solution of irregular differential equation with boundary conditions. Scientific Journal of Pure and Applied Sciences, [S. l.], v. 2, n. 8, p. 293-298, 2013. Disponível em: http://sjournals.com/index.php/sjpas/article/view/967. Acesso em: 22 jul. 2024.