GRECO, L.; IWANIEC, T.; SBORDONE, C.; STROFFOLINI, B. Degree formulas for maps with nonintegrable Jacobian. Topological Methods in Nonlinear Analysis, [S. l.], v. 6, n. 1, p. 81–95, 1995. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1995.033. Acesso em: 24 apr. 2024.