%0 Journal Article
%A D.C. LAY
%T Spectral Analysis Using Ascent, Descent, Nullity and Defect.
%J Mathematische Annalen
%D 1970
%P 197-214
%V 184
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1970__184_161923/
%F MAN_1970__184_161923