@article{CRMATH_2007__344_6_349_0,
     author = {Bourgain, Jean},
     title = {Sum{\textendash}product theorems and exponential sum bounds in residue classes for general modulus},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {349--352},
     publisher = {Elsevier},
     volume = {344},
     number = {6},
     year = {2007},
     doi = {10.1016/j.crma.2007.01.019},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2007.01.019/}
}