TY - JOUR AU - Yu. E. Linke TI - An application of the Steiner point for investigating a class of sublinear operators JO - Doklady Akademii Nauk PY - 1980 SP - 1069 EP - 1072 VL - 254 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1980_254_5_a10/ LA - ru ID - DAN_1980_254_5_a10 ER -