RUTKAUSKAS, Stasys. Dirichlet type problem for the system of elliptic equations, which order degenerate at a line. Nonlinear Analysis: Modelling and Control, [S. l.], v. 19, n. 3, p. 476–487, 2014. DOI: 10.15388/NA.2014.3.11. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/13648.. Acesso em: 5 jul. 2024.