TY - JOUR AU - R. M. Trigub TI - Direct theorems on approximation of smooth functions by algebraic polynomials on a segment JO - Matematičeskie zametki PY - 1993 SP - 113 EP - 121 VL - 54 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1993_54_6_a9/ LA - ru ID - MZM_1993_54_6_a9 ER -