@article{TAC_2015_30_a28,
     author = {Paul Bressler and Alexander Gorokhovsky and Ryszard Nest and Boris Tsygan},
     title = {Deligne groupoid revisited},
     journal = {Theory and applications of categories},
     pages = {1001--1016},
     publisher = {mathdoc},
     volume = {30},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2015_30_a28/}
}