TY - JOUR AU - S. A. Feodorov TI - On an extremal property of spheres in Hamming spaces JO - Doklady Akademii Nauk PY - 1980 SP - 1353 EP - 1357 VL - 254 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1980_254_6_a17/ LA - ru ID - DAN_1980_254_6_a17 ER -