%0 Journal Article
%A S. E. Kozlov
%T The topology and the Lorentz-invariant pseudo-Riemannian  metric of the manifold of directions in the

%J Zapiski Nauchnykh Seminarov POMI
%D 1997
%P 141-151
%V 246
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1997_246_a7/
%G ru
%F ZNSL_1997_246_a7