@article{CRMATH_2003__337_2_75_0,
     author = {Jean Bourgain and S.V. Konyagin},
     title = {Estimates for the number of sums and products and for exponential sums over subgroups in fields of prime order},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {75--80},
     publisher = {Elsevier},
     volume = {337},
     number = {2},
     year = {2003},
     doi = {10.1016/S1631-073X(03)00281-4},
     language = {en},
}