REDDY, B. S.; DHARMAIAH, V. Spectral Results for Operator Valued Functions. Journal of Informatics and Mathematical Sciences, [S. l.], v. 2, n. 1, p. 7–22, 2010. DOI: 10.26713/jims.v2i1.23. Disponível em: https://www.rgnpublications.com/journals/index.php/jims/article/view/23. Acesso em: 28 apr. 2024.