L_p Saturation and Inverse Theorems for Modified Bernstein Polynomials Z. DitzianC. May Indiana University Mathematics Journal 1976 text pdf 10.1512/iumj.1976.25.25058 10.1512/iumj.1976.25.25058 en Indiana Univ. Math. J. 25 (1976) 733 - 751 state-of-the-art mathematics http://iumj.org/access/