@article{CTGDC_2008__49_3_176_0, author = {Bourn, Dominique}, title = {The Mal'tsev operation on extensions}, journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques}, volume = {49}, year = {2008}, pages = {176-195}, mrnumber = {2449672}, zbl = {1166.18002}, language = {en}, url = {http://dml.mathdoc.fr/item/CTGDC_2008__49_3_176_0} }
Bourn, Dominique. The Mal'tsev operation on extensions. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 49 (2008) pp. 176-195. http://gdmltest.u-ga.fr/item/CTGDC_2008__49_3_176_0/
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