TY - JOUR AU - S. V. Sevast'yanov TI - Approximate algorithms in Johnson problems and the summation of vectors JO - Diskretnyj analiz i issledovanie operacij PY - 1980 SP - 64 EP - 73 IS - 20 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DA_1980_20_a5/ LA - ru ID - DA_1980_20_a5 ER -