Direct results for certain family of integral type operators. Gupta, Vijay; Doğru, Ogün — 2005 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Approximation of bounded variation functions by a Bézier variant of the Bleimann, Butzer, and Hahn operators. Gupta, Vijay; Doğru, Ogün — 2006 International Journal of Mathematics and Mathematical Sciences
Bleimann, Butzer, and Hahn operators based on the q -integers. Aral, Ali; Doğru, Ogün — 2007 Journal of Inequalities and Applications [electronic only]