@article{PPN235181684_0268+dmdlog17, title = {A Class of Positive Trigonometrie Sums.}, journal = {Mathematische Annalen}, volume = {268}, year = {1984}, pages = {91-122}, zbl = {0522.42001}, url = {http://dml.mathdoc.fr/item/PPN235181684_0268+dmdlog17} }
Hewitt, Edwin; Brown, Gavin. A Class of Positive Trigonometrie Sums.. Mathematische Annalen, Tome 268 (1984) pp. 91-122. http://gdmltest.u-ga.fr/item/PPN235181684_0268+dmdlog17/