%0 Journal Article %A A. A. Milyutin %T Conditions for the~non-negativity of integral quadratic forms with constant %J Sbornik. Mathematics %D 2002 %P 531-557 %V 193 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2002_193_4_a3/ %G en %F SM_2002_193_4_a3