@article{JTNB_2004__16_1_233_0, author = {Voloch, Jos\'e Felipe}, title = {On some subgroups of the multiplicative group of finite rings}, journal = {Journal de th\'eorie des nombres de Bordeaux}, pages = {233--239}, publisher = {Universit\'e Bordeaux 1}, volume = {16}, number = {1}, year = {2004}, doi = {10.5802/jtnb.445}, zbl = {1078.11069}, mrnumber = {2145584}, language = {en}, url = {http://www.numdam.org/articles/10.5802/jtnb.445/} }