BONAFEDE, S. Strongly nonlinear degenerate elliptic equations with discontinuous coefficients. I. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 7, p. 867–875, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5259. Acesso em: 5 dec. 2025.