1. Simultaneous approximation by linear combination of modified Bernstein polynomials;Agrawal;Bull. Greek Math. Soc.,1989
2. Complétement à l'article de E. Voronovskaja “Determination de la forme asymptotique de l'approximation des fonctions par les polynômes de M. Bernstein”;Bernstein;C. R. Acad. Sci. URSS,1932
3. Linear combinations of Bernstein polynomials;Butzer;Can. J. Math.,1953
4. A global inverse theorem for combinations of Bernstein polynomials;Ditzian;J. Approx. Theory,1979
5. Moduli of Smoothness;Ditzian,1987