%0 Journal Article
%A N. Kamran
%A J.C. Hurtubise
%T Projective connections, double fibrations and formal neighbourhoods of lines.
%J Mathematische Annalen
%D 1992
%P 383-410
%V 292
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1992__292_2_164921/
%F MAN_1992__292_2_164921