PHUKON, A.; NARZARY, N. Hyponormality of Toeplitz Operators on Symmetric-type Circulant Trigonometric Polynomial Symbols: An Extremal Case. Communications in Mathematics and Applications, [S. l.], v. 15, n. 3, p. 959–968, 2024. DOI: 10.26713/cma.v15i3.2891. Disponível em: http://www.journals.rgnpublications.com/index.php/cma/article/view/2891. Acesso em: 16 jun. 2025.