@article{1077489646, author = {Ward, Morgan}, title = {The null divisors of linear recurring series}, journal = {Duke Math. J.}, volume = {2}, number = {1}, year = {1936}, pages = { 472-476}, language = {en}, url = {http://dml.mathdoc.fr/item/1077489646} }
Ward, Morgan. The null divisors of linear recurring series. Duke Math. J., Tome 2 (1936) no. 1, pp. 472-476. http://gdmltest.u-ga.fr/item/1077489646/