%0 Journal Article
%A V. V. Lebedev
%T Diffeomorphisms of the Circle and the Beurling--Helson Theorem
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 2002
%P 30-35
%V 36
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_2002_36_1_a2/
%G ru
%F FAA_2002_36_1_a2