KOVALENKO, S. S. Symmetry analysis and exact solutions of one class of (1 + 3)-dimensional boundary-value problems of the Stefan type. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 10, p. 1352–1359, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2811. Acesso em: 5 dec. 2025.