Some Approximation Results on A Special Class of Positive Linear Oparators. Journal of International Academy of Physical Sciences, [S. l.], v. 3, n. 1-4, p. 27–40, 1999. Disponível em: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/713. Acesso em: 23 oct. 2026.