@article{04146196, title = {On commutativity theorems for rings.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {13}, year = {1990}, pages = {87-92}, doi = {10.1155/S0161171290000126}, zbl = {0699.16021}, language = {en}, url = {http://dml.mathdoc.fr/item/04146196} }
Abujabal, H.A.S.; Khan, M.S. On commutativity theorems for rings.. International Journal of Mathematics and Mathematical Sciences, Tome 13 (1990) pp. 87-92. doi : 10.1155/S0161171290000126. http://gdmltest.u-ga.fr/item/04146196/