TY - JOUR AU - R. G. Mamedov TI - Approximation of functions by generalized linear Landau operators JO - Doklady Akademii Nauk PY - 1961 SP - 28 EP - 30 VL - 139 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_139_1_a5/ LA - ru ID - DAN_1961_139_1_a5 ER -