%0 Journal Article
%A A. P. Terekhin
%T An estimate for spherical approximations by local moduli of
%J Doklady Akademii Nauk
%D 1994
%P 739-742
%V 339
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1994_339_6_a3/
%G ru
%F DAN_1994_339_6_a3