Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMJ_2004__54_1_a19, author = {Je\v{z}ek, J.}, title = {A note on idempotent modifications of groups}, journal = {Czechoslovak Mathematical Journal}, pages = {229--231}, publisher = {mathdoc}, volume = {54}, number = {1}, year = {2004}, mrnumber = {2040234}, zbl = {1048.08005}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMJ_2004__54_1_a19/} }
Ježek, J. A note on idempotent modifications of groups. Czechoslovak Mathematical Journal, Tome 54 (2004) no. 1, pp. 229-231. http://geodesic.mathdoc.fr/item/CMJ_2004__54_1_a19/