%0 Journal Article
%A D. A. Popov
%T The discrete spectrum of the Laplace operator on the fundamental domain of the modular group and the Chebyshev psi-function
%J Izvestiya. Mathematics 
%D 2019
%P 1066-1079
%V 83
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2019_83_5_a6/
%G en
%F IM2_2019_83_5_a6