1. Berens, H. and Y. Xu, On Bernstein-Durrmeyer polynomials with Jacobi- weights, in Approximation Theory and Functional Analysis, C. K. Chui, ed., Academic Press, Boston 1990, pp. 25–46 On Bernstein-Durrmeyer polynomials with Jacobi weights: the cases p = 1 and p = ∞, in Approximation, Interpolation, and Summation-Conference, S. Baron and D. Leviatan, Israel Mathematical Conference Proceedings Vol. 4, Weizmann Science Press of Israel, Jerusalem 1992, pp. 51–62
2. Berens, H. and Y. Xu, K-moduli, moduli of smoothness, and Bernstein polynomials on a simplex, Indag. Mathem., N. S, 2 (1991), 411–421
3. deBoor, C., A Practical Guide to Splines, Springer-Verlag, New York 1978
4. deBoor, C., B-form basics, in Geometric Modelling: Algorithms and New Trends-Conference, G. E. Parin, ed., SIAM, Philadelphia, PA, 1987
5. Cala Rodriguez, P. and H. Wallin, Padé-type approximants and a summabihty theorem of Eier mann, J. Comput Appl Math
39(1992), 15–21