%0 Journal Article
%A I. M. Gel'fand
%A G. L. Rybnikov
%T Algebraic and topological invariants of oriented matroids
%J Doklady Akademii Nauk
%D 1989
%P 791-795
%V 307
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_307_4_a4/
%G ru
%F DAN_1989_307_4_a4