%0 Journal Article
%A A. I. Astrovskii
%T A method for solving an observation-estimation problem in linear nonstationary systems
%J Differencialʹnye uravneniâ
%D 1988
%P 929-935
%V 24
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1988_24_6_a1/
%G ru
%F DE_1988_24_6_a1