NIKOUFAR, I.; RASSIAS, J. M. θ-Centralizers on Semiprime Banach *-algebras. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 2, p. 269–278, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2129. Acesso em: 5 dec. 2025.