%0 Journal Article
%A A. B. Venkov
%T On an asymptotic formula connected with the number of eigenvalues corresponding to odd eigenfunctions of the Laplace--Beltrami operator on a fundamental region of the modular group $\mathrm{PSL}(2,\mathbf{Z})$
%J Doklady Akademii Nauk
%D 1977
%P 1021-1023
%V 233
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1977_233_6_a1/
%G ru
%F DAN_1977_233_6_a1