%0 Journal Article
%A V. A. Il'in
%T Exact conditions for the localization and convergence of Fourier series in fundamental function systems of the Beltrami operator
%J Doklady Akademii Nauk
%D 1970
%P 20-21
%V 191
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_191_1_a3/
%G ru
%F DAN_1970_191_1_a3