JOHNSON, J.; TONEV, T. Spectral Conditions for Composition Operators on Algebras of Functions. Communications in Mathematics and Applications, [S. l.], v. 3, n. 1, p. 51–59, 2012. DOI: 10.26713/cma.v3i1.144. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/144. Acesso em: 2 may. 2024.