%0 Journal Article
%A T. Küpper
%T Pointwise Lower and Upper Bounds for Eigenfunctions of Ordinary Differential Operators.
%J Numerische Mathematik
%D 1976
%P 111-120
%V 27
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1976__27_132436/
%F NUMA_1976__27_132436