%0 Journal Article
%A Kh. P. Rustamov
%T Approximation of functions on a sphere
%J Doklady Akademii Nauk
%D 1991
%P 1319-1325
%V 320
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1991_320_6_a6/
%G ru
%F DAN_1991_320_6_a6