PESONEN, M. I. Simplified proofs of some basic theorems for quasiregular mappings. Annales Fennici Mathematici, [S. l.], v. 8, n. 2, p. 247–250, 1983. DOI: 10.5186/aasfm.1983.0820. Disponível em: https://afm.journal.fi/article/view/134470. Acesso em: 25 nov. 2024.