JENA, P. K.; DAS, N. On the range and kernel of Toeplitz and little Hankel operators. Methods of Functional Analysis and Topology, [S. l.], v. 19, n. 1, p. 55–67, 2013. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/535. Acesso em: 18 dec. 2025.