@article{JEMS_2015_17_1_a4,
     author = {Paul Balmer},
     title = {Stacks of group representations},
     journal = {Journal of the European Mathematical Society},
     pages = {189--228},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {2015},
     doi = {10.4171/jems/501},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/501/}
}