TY  - JOUR
AU  - N. Kamran
AU  - J.C. Hurtubise
TI  - Projective connections, double fibrations and formal neighbourhoods of lines.
JO  - Mathematische Annalen
PY  - 1992
SP  - 383
EP  - 410
VL  - 292
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1992__292_2_164921/
ID  - MAN_1992__292_2_164921
ER  -