LOHAJ, M. R. QUASITRIANGULARITY OF THE WEIGHTED SHIFT OPERATORS WITH SPECIAL OPERATOR WEIGHTS. Matematichki Bilten, [S. l.], v. 28, n. 1, 2004. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1700. Acesso em: 13 jun. 2026.