@article{03914497, title = {More on the Schur group of a commutative ring.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {8}, year = {1985}, pages = {275-282}, doi = {10.1155/S0161171285000308}, zbl = {0573.16002}, language = {en}, url = {http://dml.mathdoc.fr/item/03914497} }
Mollin, R.A. More on the Schur group of a commutative ring.. International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985) pp. 275-282. doi : 10.1155/S0161171285000308. http://gdmltest.u-ga.fr/item/03914497/