%0 Journal Article %A Kane, Richard %T Poincare Duality and the Ring of Coinvariants %J Canadian mathematical bulletin %D 1994 %P 82-88 %V 37 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-012-3/ %R 10.4153/CMB-1994-012-3 %F 10_4153_CMB_1994_012_3