@article{100615, author = {Louis Joel Mordell}, title = {Incomplete exponential sums and incomplete residue systems for congruences}, journal = {Czechoslovak Mathematical Journal}, volume = {14}, year = {1964}, pages = {235-242}, zbl = {0135.10502}, mrnumber = {0170875}, language = {en}, url = {http://dml.mathdoc.fr/item/100615} }
Mordell, Louis Joel. Incomplete exponential sums and incomplete residue systems for congruences. Czechoslovak Mathematical Journal, Tome 14 (1964) pp. 235-242. http://gdmltest.u-ga.fr/item/100615/
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