REICH, E.; JIXIU, C. Extensions with bounded ∂-derivative. Annales Fennici Mathematici, [S. l.], v. 16, n. 2, p. 377–389, 1991. DOI: 10.5186/aasfm.1991.1623. Disponível em: https://afm.journal.fi/article/view/134727. Acesso em: 25 nov. 2024.