ASTALA, K.; JÄÄSKELÄINEN, J. Homeomorphic solutions to reduced Beltrami equations. Annales Fennici Mathematici, [S. l.], v. 34, n. 2, p. 607–613, 2009. Disponível em: https://afm.journal.fi/article/view/135288. Acesso em: 25 nov. 2024.