@article{1102991597, author = {Caldwell, William H.}, title = {Hypercyclic rings.}, journal = {Pacific J. Math.}, volume = {27}, number = {3}, year = {1968}, pages = { 29-44}, language = {en}, url = {http://dml.mathdoc.fr/item/1102991597} }
Caldwell, William H. Hypercyclic rings.. Pacific J. Math., Tome 27 (1968) no. 3, pp. 29-44. http://gdmltest.u-ga.fr/item/1102991597/