TY - JOUR AU - V. A. Lyubetskii TI - From the existence of a nonmeasurable set of type $A_2$ there follows the existence of an uncountable set that contains JO - Doklady Akademii Nauk PY - 1970 SP - 548 EP - 550 VL - 195 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1970_195_3_a8/ LA - ru ID - DAN_1970_195_3_a8 ER -