P. SAM JOHNSON; VINOTH A; K. KAMARAJ. Fuglede-Putnam type commutativity theorems for EP operators. Malaya Journal of Matematik, India, v. 9, n. 01, p. 709–714, 2021. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1117. Acesso em: 22 nov. 2024.