%0 Journal Article
%A D. V. Ivanov
%T Totally geodesic subsets in the variety of directions of physical space
%J Zapiski Nauchnykh Seminarov POMI
%D 2001
%P 141-153
%V 279
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2001_279_a7/
%G ru
%F ZNSL_2001_279_a7