MESBAH, N.; MESSAOUDENE, H. D-hyponormal and D-quasi-hyponormal Operators. Communications in Mathematics and Applications, [S. l.], v. 13, n. 3, p. 1097–1107, 2022. DOI: 10.26713/cma.v13i3.1708. Disponível em: http://www.rgnpublications.com/journals/index.php/cma/article/view/1708. Acesso em: 18 may. 2024.