%0 Journal Article
%A A. A. Arsen'ev
%A V. A. Il'in
%T mean value formula for the fundamental functions of the Beltrami operator, and a precise estimate of the sum of the squares of the fundamental functions
%J Doklady Akademii Nauk
%D 1970
%P 1263-1266
%V 190
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_190_6_a0/
%G ru
%F DAN_1970_190_6_a0