%0 Journal Article
%A A. N. Tyurin
%T Local and global invariants of a~four-dimensional pseudo-Riemannian manifold
%J Informatics and Automation
%D 1984
%P 205-219
%V 165
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1984_165_a15/
%G ru
%F TRSPY_1984_165_a15