OROVČANEC, Marija. ON OPERATOR VALUED WEIGHTED SHIFTS COMMUTING WITH \(U_{+}\). Matematichki Bilten, [S. l.], v. 18, n. 1, p. 49–56, 1994. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1544. Acesso em: 14 aug. 2026.