On M−quasi Paranormal Operators . European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 3, p. 830–840, 2022. DOI: 10.29020/nybg.ejpam.v15i3.4392. Disponível em: https://ejpam.com/index.php/ejpam/article/view/4392.. Acesso em: 21 jul. 2024.