Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1975__50_139635, author = {Guido Mislin and Peter Hilton}, title = {Bicartesian {Squares} of {Nilpotent} {Groups.}}, journal = {Commentarii mathematici Helvetici}, pages = {477--492}, publisher = {mathdoc}, volume = {50}, year = {1975}, zbl = {0325.20031}, url = {http://geodesic.mathdoc.fr/item/CMH_1975__50_139635/} }
Guido Mislin; Peter Hilton. Bicartesian Squares of Nilpotent Groups.. Commentarii mathematici Helvetici, Tome 50 (1975), pp. 477-492. http://geodesic.mathdoc.fr/item/CMH_1975__50_139635/