@article{10_4171_dm_371,
     author = {Johannes Ebert and Oscar Randal-Williams},
     title = {Stable cohomology of the universal {Picard} varieties and the extended mapping class group},
     journal = {Documenta mathematica},
     pages = {417--450},
     year = {2012},
     volume = {17},
     doi = {10.4171/dm/371},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/371/}
}