TY - JOUR AU - O. V. Besov TI - Multiplicative estimates of integral moduli of smoothness JO - Informatics and Automation PY - 1976 SP - 21 EP - 26 VL - 140 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1976_140_a2/ LA - ru ID - TRSPY_1976_140_a2 ER -