MINENKO, A. S. Investigation of one convective Stefan problem by the Ritz method. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 59, n. 11, p. 1546–1556, 2007. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3410. Acesso em: 6 dec. 2025.