%0 Journal Article
%A N. N. Stepanyuk
%T Some problems of controllability and observability of two-parameter discrete systems
%J Differencialʹnye uravneniâ
%D 1978
%P 2190-2195
%V 14
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1978_14_12_a11/
%G ru
%F DE_1978_14_12_a11