%0 Journal Article
%A W.N. EVERITT
%T Singular Differential Equations I: The Even Order Case.
%J Mathematische Annalen
%D 1964
%P 9-24
%V 156
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1964__156_161202/
%F MAN_1964__156_161202