RASHID, M. H. M.; NOORANI, M. S. M. On relaxation normality in the Fuglede-Putnam theorem for a quasi-class $A$ operators. Tamkang Journal of Mathematics, [S. l.], v. 40, n. 3, p. 307–312, 2009. DOI: 10.5556/j.tkjm.40.2009.508. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/508. Acesso em: 3 may. 2024.