@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/