TY - JOUR AU - I. I. Ibragimov AU - A. D. Gadzhiev TI - On a sequence of linear positive operators JO - Doklady Akademii Nauk PY - 1970 SP - 1222 EP - 1225 VL - 193 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1970_193_6_a2/ LA - ru ID - DAN_1970_193_6_a2 ER -