GUBREEV, G. M.; TARASENKO, A. A. Unconditional basis property for some families of functions and continuous invertibility of Toeplitz operators with unimodular symbols. Methods of Functional Analysis and Topology, [S. l.], v. 8, n. 1, p. 30–35, 2002. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/174. Acesso em: 18 dec. 2025.