TY - JOUR AU - A. S. Nemirovskii TI - Polynomial approximation of functions in a Hilbert space JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1973 SP - 88 EP - 89 VL - 7 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a14/ LA - ru ID - FAA_1973_7_4_a14 ER -