Quasi-P-Normal and n-Power class Q Composite Multiplication Operators on the Complex Hilbert Space. Global Journal of Science Frontier Research, [S. l.], v. 23, n. F6, p. 73–80, 2023. Disponível em: https://testing.journalofscience.org/index.php/GJSFR/article/view/102750. Acesso em: 4 feb. 2026.