%0 Journal Article
%A Yu. V. Egorov
%A V. A. Kondrat'ev
%T Estimates for the first eigenvalue in some Sturm--Liouville problems
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1996
%P 439-508
%V 51
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1996_51_3_a3/
%G en
%F RM_1996_51_3_a3