Lupaş-Durrmeyer operators. Deo, Naokant — 2004 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Equivalent theorem on Lupaş operators. Deo, Naokant — 2007 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Simultaneous approximation by Lupaş modified operators with weighted function of Szász operators. Deo, Naokant — 2004 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Simultaneous approximation by two dimensional hybrid positive linear operators. Deo, Naokant — 2006 General Mathematics
On the rate of convergence for bivariate Beta operators. Gupta, Vijai; Deo, Naokant — 2005 General Mathematics
Direct and inverse theorems for Szâsz-lupas type operators in simultaneous approximation Naokant Deo — 2006 Matematički Vesnik
A note on rate of approximation for certain Bézier-Durrmeyer operators Vijay Gupta; Naokant Deo — 2011 Matematički Vesnik