P., V.; J., S. I. M. Fuglede-Putnam Theorem and Quasi-nilpotent part of n-power normal operators. Tamkang Journal of Mathematics, [S. l.], v. 46, n. 2, p. 151–165, 2015. DOI: 10.5556/j.tkjm.46.2015.1665. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1665. Acesso em: 6 may. 2024.