%0 Journal Article %A S. A. Evdokimov %T Analytic properties of Euler products for congruence-subgroups of $\operatorname{Sp}_2(\mathbf Z)$ %J Sbornik. Mathematics %D 1981 %P 335-363 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1981_38_3_a1/ %G en %F SM_1981_38_3_a1