DOVGOSHEI, A. A. Chebyshev polynomial approximation on a closed subset with unique limit point and analytic extension of functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 7, p. 891–900, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5261. Acesso em: 14 apr. 2025.