%0 Journal Article %A Yu. A. Vorohobko %A A. L. Lebedev %T On the solution of problems of ideal observation in time-dependent systems with retarded argument %J Differencialʹnye uravneniâ %D 1990 %P 2165-2167 %V 26 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1990_26_12_a18/ %G ru %F DE_1990_26_12_a18