%0 Journal Article
%A A. M. Nakhushev
%T On the validity of an a priori estimate
%J Doklady Akademii Nauk
%D 1981
%P 45-47
%V 257
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_257_1_a9/
%G ru
%F DAN_1981_257_1_a9