%0 Journal Article
%A Yu. V. Bezzubov
%T Observability in problems of one class
%J Doklady Akademii Nauk
%D 1976
%P 822-825
%V 231
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1976_231_4_a12/
%G ru
%F DAN_1976_231_4_a12