IVOCHKINA, N.; LADYZHENSKAYA, O. On parabolic problems generated by some symmetric functions of the eigenvalues of the Hessian. Topological Methods in Nonlinear Analysis, [S. l.], v. 4, n. 1, p. 19–29, 1994. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1994.021. Acesso em: 26 apr. 2024.