%0 Journal Article
%A P. Ehrlich
%A Carmen Chicone
%T Line Integration of Ricci Curvature and Conjugate Points in Lorentzian and Riemannian Manifolds.
%J Manuscripta mathematica
%D 1980
%P 297-316
%V 31
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1980__31_154708/
%F MM2_1980__31_154708