TY - JOUR AU - A. A. Milyutin TI - Conditions for the~non-negativity of integral quadratic forms with constant JO - Sbornik. Mathematics PY - 2002 SP - 531 EP - 557 VL - 193 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2002_193_4_a3/ LA - en ID - SM_2002_193_4_a3 ER -