@article{01780370, title = {A combinatorial commutativity property for rings.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {525-530}, doi = {10.1155/S0161171202008074}, zbl = {1003.16028}, language = {en}, url = {http://dml.mathdoc.fr/item/01780370} }
Bell, Howard E.; Klein, Abraham A. A combinatorial commutativity property for rings.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 525-530. doi : 10.1155/S0161171202008074. http://gdmltest.u-ga.fr/item/01780370/