Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1970_8_4_a12, author = {B. G. Kotsarev}, title = {Partially rational trigonometric sums}, journal = {Matemati\v{c}eskie zametki}, pages = {529--540}, publisher = {mathdoc}, volume = {8}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a12/} }
B. G. Kotsarev. Partially rational trigonometric sums. Matematičeskie zametki, Tome 8 (1970) no. 4, pp. 529-540. http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a12/