%0 Journal Article %A V. M. Morozov %A F. Yu. Baklanov %T Practical methods to investigate observability of linear time-varying systems %J Fundamentalʹnaâ i prikladnaâ matematika %D 2018 %P 221-236 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2018_22_2_a14/ %G ru %F FPM_2018_22_2_a14