%0 Journal Article %A Johannes Ebert %A Oscar Randal-Williams %T Stable cohomology of the universal Picard varieties and the extended mapping class group %J Documenta mathematica %D 2012 %P 417-450 %V 17 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/371/ %R 10.4171/dm/371 %F 10_4171_dm_371