%0 Journal Article %A V. T. Borukhov %T Grassmann manifolds and pairs of linear relations in the theory of descriptor dynamical systems %J Differencialʹnye uravneniâ %D 1997 %P 1601-1606 %V 33 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1997_33_12_a2/ %G ru %F DE_1997_33_12_a2