MARTIO, O. Boundary values and injectiveness of the solutions of Beltrami equations. Annales Fennici Mathematici, [S. l.], n. 402, 1967. DOI: 10.5186/aasfm.1967.402. Disponível em: https://afm.journal.fi/article/view/134078. Acesso em: 26 nov. 2024.