@article{GDZPPN002400200, title = {Ringe mit x(yz) = (yx)z.}, journal = {Mathematische Zeitschrift}, volume = {99}, year = {1967}, pages = {400-404}, zbl = {0189.33201}, url = {http://dml.mathdoc.fr/item/GDZPPN002400200} }
Thedy, Armin. Ringe mit x(yz) = (yx)z.. Mathematische Zeitschrift, Tome 99 (1967) pp. 400-404. http://gdmltest.u-ga.fr/item/GDZPPN002400200/