TY - JOUR AU - Yu. N. Artamonov TI - Group choice using matrix norms JO - The Bulletin of Irkutsk State University. Series Mathematics PY - 2016 SP - 3 EP - 20 VL - 18 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IIGUM_2016_18_a0/ LA - ru ID - IIGUM_2016_18_a0 ER -