@article{CM_1995__97_1-2_253_0, author = {Sekiguchi, Tsutomu and Suwa, Noriyuki}, title = {On the structure of the group scheme $\mathbb {Z}[\mathbb {Z} / p^n]^\times $}, journal = {Compositio Mathematica}, volume = {99}, year = {1995}, pages = {253-271}, mrnumber = {1355127}, zbl = {0876.14031}, language = {en}, url = {http://dml.mathdoc.fr/item/CM_1995__97_1-2_253_0} }
Sekiguchi, Tsutomu; Suwa, Noriyuki. On the structure of the group scheme $\mathbb {Z}[\mathbb {Z} / p^n]^\times $. Compositio Mathematica, Tome 99 (1995) pp. 253-271. http://gdmltest.u-ga.fr/item/CM_1995__97_1-2_253_0/
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