@article{GDZPPN002034387, title = {On commutativity of P.I. rings. (Short Communication).}, journal = {Aequationes mathematicae}, volume = {26}, year = {1983}, pages = {121-121}, url = {http://dml.mathdoc.fr/item/GDZPPN002034387} }
Bell, Howard E. On commutativity of P.I. rings. (Short Communication).. Aequationes mathematicae, Tome 26 (1983) p. 121. http://gdmltest.u-ga.fr/item/GDZPPN002034387/