%0 Journal Article
%A D.N. Kupeli
%T On Existence and Comparison of Conjugate Points in Riemannian and Lorentzian Geometry.
%J Mathematische Annalen
%D 1986
%P 67-80
%V 276
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1986__276_164184/
%F MAN_1986__276_164184