WANJALA VICTOR; PETER KIPTOO RUTTO. On $ K^{*}$ Quasi-n-Class (Q) Operators. International Journal of Mathematics And its Applications, [S. l.], v. 9, n. 2, p. 189–193, 2021. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/85. Acesso em: 5 may. 2024.