@article{1077490641, author = {Tornheim, Leonard}, title = {Sums of $n$ -th powers in fields of prime characteristic}, journal = {Duke Math. J.}, volume = {4}, number = {1}, year = {1938}, pages = { 359-362}, language = {en}, url = {http://dml.mathdoc.fr/item/1077490641} }
Tornheim, Leonard. Sums of $n$ -th powers in fields of prime characteristic. Duke Math. J., Tome 4 (1938) no. 1, pp. 359-362. http://gdmltest.u-ga.fr/item/1077490641/