%0 Journal Article
%A W.M. Greenlee
%T Stability Theorems for Singular Perturbation of Eigenvalues.
%J Manuscripta mathematica
%D 1981
%P 157-174
%V 34
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1981__34_154769/
%F MM2_1981__34_154769