SAEED M. ALI. Classification of a Nonlinear Fin Equation in Spherical Coordinates via Lie Symmetry Method. International Journal of Mathematics And its Applications, [S. l.], v. 7, n. 1, p. 107–120, 2019. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/273. Acesso em: 2 may. 2024.