Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1983__19_2_a5, author = {\v{S}marda, Bohumil and Niemenmaa, Markku}, title = {Normal subgroups as ideals}, journal = {Archivum mathematicum}, pages = {109--111}, publisher = {mathdoc}, volume = {19}, number = {2}, year = {1983}, mrnumber = {724303}, zbl = {0554.20005}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1983__19_2_a5/} }
Šmarda, Bohumil; Niemenmaa, Markku. Normal subgroups as ideals. Archivum mathematicum, Tome 19 (1983) no. 2, pp. 109-111. http://geodesic.mathdoc.fr/item/ARM_1983__19_2_a5/