%0 Journal Article
%A A. I. Astrovskii
%T Generalized Gram Matrix and Its Application to the Observability Problem for Linear Nonsteady Systems
%J Matematičeskie zametki
%D 2001
%P 163-170
%V 69
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2001_69_2_a0/
%G ru
%F MZM_2001_69_2_a0