TY  - JOUR
AU  - S. E. Kozlov
TI  - The topology and the Lorentz-invariant pseudo-Riemannian  metric of the manifold of directions in the

JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1997
SP  - 141
EP  - 151
VL  - 246
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1997_246_a7/
LA  - ru
ID  - ZNSL_1997_246_a7
ER  -