@article{CTGDC_2003__44_4_247_0,
     author = {Garz\'on, B. A. R. and del Rio, A.},
     title = {Low-dimensional cohomology for categorical groups},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {247--280},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {44},
     number = {4},
     year = {2003},
     mrnumber = {2030048},
     zbl = {1042.18006},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_2003__44_4_247_0/}
}