%0 Journal Article %A S. B. Kuksin %T Conservative perturbations of infinite-dimensional linear systems depending on a vector parameter %J Funkcionalʹnyj analiz i ego priloženiâ %D 1989 %P 72-73 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1989_23_1_a12/ %G ru %F FAA_1989_23_1_a12