TY  - JOUR
AU  - A. I. Astrovskii
TI  - Generalized Gram Matrix and Its Application to the Observability Problem for Linear Nonsteady Systems
JO  - Matematičeskie zametki
PY  - 2001
SP  - 163
EP  - 170
VL  - 69
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2001_69_2_a0/
LA  - ru
ID  - MZM_2001_69_2_a0
ER  -