%0 Journal Article %A A. B. Venkov %A A. I. Vinogradov %T The asymptotic distribution of the norms of hyperbolic classes and spectral characteristics of cusp forms of weight zero for a Fuchsian group %J Doklady Akademii Nauk %D 1978 %P 1373-1376 %V 243 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_243_6_a5/ %G ru %F DAN_1978_243_6_a5