%0 Journal Article
%A A. Yu. Nenashev
%T On Hecke operators for a~principal congruence-subgroups
%J Zapiski Nauchnykh Seminarov POMI
%D 1986
%P 130-135
%V 154
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1986_154_a10/
%G ru
%F ZNSL_1986_154_a10