%0 Journal Article
%A M. O. Otelbaev
%T Estimates of $s$-numbers and completeness conditions for systems of root vectors of non-self-adjoint Sturm--Liouville operators
%J Matematičeskie zametki
%D 1979
%P 409-418
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1979_25_3_a8/
%G ru
%F MZM_1979_25_3_a8