%0 Journal Article %A V. A. Yurko %T On Differential Operators with Nonseparated Boundary Conditions %J Funkcionalʹnyj analiz i ego priloženiâ %D 1994 %P 90-92 %V 28 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1994_28_4_a11/ %G ru %F FAA_1994_28_4_a11