@article{BSMF_1990__118_2_129_0,
     author = {Norrie, Katherine},
     title = {Actions and automorphisms of crossed modules},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {129--146},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {118},
     number = {2},
     year = {1990},
     doi = {10.24033/bsmf.2140},
     mrnumber = {91m:18010},
     zbl = {0719.20018},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2140/}
}