HRYNTSIV, N. M. Stefan problem for a weakly degenerate parabolic equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 5, p. 640–653, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2749. Acesso em: 5 dec. 2025.