LEHTO, O. Remarks on the integrability of the derivatives of quasiconformal mappings. Annales Fennici Mathematici, [S. l.], n. 371, 1966. DOI: 10.5186/aasfm.1966.371. Disponível em: https://afm.journal.fi/article/view/134047. Acesso em: 26 nov. 2024.