WANJALA VICTOR; A. M. NYONGESA. On ($\alpha$,$\beta$)-Class (Q) Operators. International Journal of Mathematics And its Applications, [S. l.], v. 9, n. 2, p. 111–113, 2021. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/73. Acesso em: 18 may. 2024.