TY - JOUR AU - R. R. Varshamov TI - Some problems of projective arithmetic JO - Doklady Akademii Nauk PY - 1993 SP - 263 EP - 268 VL - 331 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1993_331_3_a1/ LA - ru ID - DAN_1993_331_3_a1 ER -