%0 Journal Article
%A P. E. Zhidkov
%T Completeness of systems of eigenfunctions for the~Sturm--Liouville operator with potential depending on the~spectral parameter and for one non-linear problem
%J Sbornik. Mathematics
%D 1997
%P 1071-1084
%V 188
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1997_188_7_a5/
%G en
%F SM_1997_188_7_a5