%0 Journal Article %A O. B. Tsekhan %T Conditions for pointwise controllability and pointwise observability of linear time-invariant singularly perturbed systems with delay %J Trudy Instituta matematiki %D 2021 %P 138-148 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMB_2021_29_1_a12/ %G ru %F TIMB_2021_29_1_a12