%0 Journal Article
%A L. Bartholdi
%A R. I. Grigorchuk
%T On the Spectrum of Hecke Type Operators Related to Some Fractal Groups
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 2000
%P 5-45
%V 231
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_2000_231_a0/
%G en
%F TM_2000_231_a0