%0 Journal Article %A Matthias Franz %T Koszul duality and equivariant cohomology %J Documenta mathematica %D 2006 %P 243-259 %V 11 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/211/ %R 10.4171/dm/211 %F 10_4171_dm_211