Bazaly В. V.; SKRYPNIK , I. V.; TEDEEV , A. F. Conferences on nonlinear problems of mathematical physics and problems with free boundaries. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 2, p. 295–297, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7846. Acesso em: 11 apr. 2025.