@article{CTGDC_1990__31_4_277_0, author = {Korkes, F. J. and Porter, Timothy}, title = {Nilpotent crossed modules and pro-$C$ completions}, journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques}, volume = {31}, year = {1990}, pages = {277-282}, mrnumber = {1109369}, zbl = {0729.55007}, language = {en}, url = {http://dml.mathdoc.fr/item/CTGDC_1990__31_4_277_0} }
Korkes, F. J.; Porter, T. Nilpotent crossed modules and pro-$C$ completions. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 31 (1990) pp. 277-282. http://gdmltest.u-ga.fr/item/CTGDC_1990__31_4_277_0/
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