%0 Journal Article %A Alejandro Adem %A John Maginnis %T Symmetric invariants and cohomology of groups. %J Mathematische Annalen %D 1990 %P 391-412 %V 287 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164694/ %F MAN_1990__287_1_164694