%0 Journal Article %A O. A. Plaksina %T Inverse problems of spectral analysis for Sturm--Liouville operators with nonseparated boundary conditions.~II %J Sbornik. Mathematics %D 1989 %P 141-160 %V 64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1989_64_1_a8/ %G en %F SM_1989_64_1_a8