%0 Journal Article %A E. M. Markushin %T The computation of quadratic functionals for systems with time lag %J Differencialʹnye uravneniâ %D 1971 %P 369-370 %V 7 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1971_7_2_a21/ %G ru %F DE_1971_7_2_a21