%0 Journal Article %A I. F. Avdeev %T Approximation of the zeta function of quadratic forms of negative discriminant %J Čebyševskij sbornik %D 2013 %P 7-12 %V 14 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHEB_2013_14_4_a0/ %G ru %F CHEB_2013_14_4_a0