%0 Journal Article
%A Ash, Avner
%A Pollack, David
%A Soares, Dayna
%T -extensions of  and arithmetic cohomology modulo 2.
%J Experimental mathematics
%D 2004
%P 297-307
%V 13
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EXMA_2004__13_3_231233/
%G en
%F EXMA_2004__13_3_231233