%0 Journal Article %A Bourgain, Jean %A Konyagin, S.V. %T Estimates for the number of sums and products and for exponential sums over subgroups in fields of prime order %J Comptes Rendus. Mathématique %D 2003 %P 75-80 %V 337 %N 2 %I Elsevier %U http://www.numdam.org/articles/10.1016/S1631-073X(03)00281-4/ %R 10.1016/S1631-073X(03)00281-4 %G en %F CRMATH_2003__337_2_75_0