%0 Journal Article %A Jean Bourgain %A Mei-Chu Chang %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 %R 10.1016/j.crma.2004.08.007 %G en %F CRMATH_2004__339_7_463_0