%0 Journal Article
%A N. E. Firsova
%A A. I. Sherstyuk
%T Some properties of~generalized spectral problems associated with the Schr\"odinger equation
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1989
%P 59-68
%V 81
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1989_81_1_a5/
%G ru
%F TMF_1989_81_1_a5