%0 Journal Article %A I. A. Kuzin %T Some embedding theorems for spaces of Krein--Pontryagin type and their application to periodic problems %J Doklady Akademii Nauk %D 1992 %P 434-437 %V 325 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1992_325_3_a2/ %G ru %F DAN_1992_325_3_a2