Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_2006_20_3-4_a2, author = {A. N. El-Kassar and H. Y. Chehade}, title = {Generalized {Group} of {Units}}, journal = {Mathematica balkanica}, pages = {275}, publisher = {mathdoc}, volume = {20}, number = {3-4}, year = {2006}, url = {http://geodesic.mathdoc.fr/item/MABA_2006_20_3-4_a2/} }
A. N. El-Kassar and H. Y. Chehade. Generalized Group of Units. Mathematica balkanica, Tome 20 (2006) no. 3-4, p. 275. http://geodesic.mathdoc.fr/item/MABA_2006_20_3-4_a2/