@article{1102992291, author = {Bumby, R. T. and Dade, E. C.}, title = {Remark on a problem of Niven and Zuckerman.}, journal = {Pacific J. Math.}, volume = {23}, number = {3}, year = {1967}, pages = { 15-18}, language = {en}, url = {http://dml.mathdoc.fr/item/1102992291} }
Bumby, R. T.; Dade, E. C. Remark on a problem of Niven and Zuckerman.. Pacific J. Math., Tome 23 (1967) no. 3, pp. 15-18. http://gdmltest.u-ga.fr/item/1102992291/