GANELIUS, T. Rational approximation in the complex plane and on the line. Annales Fennici Mathematici, [S. l.], v. 2, n. 1, p. 129–145, 1976. DOI: 10.5186/aasfm.1976.0211. Disponível em: https://afm.journal.fi/article/view/134288. Acesso em: 25 nov. 2024.