%0 Journal Article
%A Bourgain, Jean
%A Chang, Mei-Chu
%T Sum-product theorem and exponential sum estimates in residue classes with modulus involving few prime factors
%J Comptes Rendus. Mathématique
%D 2004
%P 463-466
%V 339
%N 7
%I Elsevier
%U http://www.numdam.org/articles/10.1016/j.crma.2004.08.007/
%R 10.1016/j.crma.2004.08.007
%G en
%F CRMATH_2004__339_7_463_0