@article{02236328, title = {On torsion-free periodic rings.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2005}, year = {2005}, pages = {2321-2327}, doi = {10.1155/IJMMS.2005.2321}, zbl = {1090.16008}, language = {en}, url = {http://dml.mathdoc.fr/item/02236328} }
Khazal, R.R.; Breaz, S.; Călugăreanu, G. On torsion-free periodic rings.. International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 2321-2327. doi : 10.1155/IJMMS.2005.2321. http://gdmltest.u-ga.fr/item/02236328/