Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_2006_80_5_a15, author = {Yu. V. Malykhin}, title = {Estimates of trigonometric sums modulo $p^r$}, journal = {Matemati\v{c}eskie zametki}, pages = {793--796}, publisher = {mathdoc}, volume = {80}, number = {5}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_5_a15/} }
Yu. V. Malykhin. Estimates of trigonometric sums modulo $p^r$. Matematičeskie zametki, Tome 80 (2006) no. 5, pp. 793-796. http://geodesic.mathdoc.fr/item/MZM_2006_80_5_a15/