@article{10_2140_agt_2008_8_1419,
     author = {Willerton, Simon},
     title = {The twisted {Drinfeld} double of a finite group via gerbes and finite groupoids},
     journal = {Algebraic and Geometric Topology},
     pages = {1419--1457},
     year = {2008},
     volume = {8},
     number = {3},
     doi = {10.2140/agt.2008.8.1419},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.1419/}
}