@article{1028988897,
author = {Ullman, J. L.},
title = {On a theorem of Frobenius.},
journal = {Michigan Math. J.},
volume = {1},
number = {2},
year = {1952},
pages = { 189-193},
language = {en},
url = {http://dml.mathdoc.fr/item/1028988897}
}
Ullman, J. L. On a theorem of Frobenius.. Michigan Math. J., Tome 1 (1952) no. 2, pp. 189-193. http://gdmltest.u-ga.fr/item/1028988897/