@article{10_4064_aa_81_4_365_367,
     author = {Gy\"orgy Elekes},
     title = {On the number of sums and products},
     journal = {Acta Arithmetica},
     pages = {365--367},
     publisher = {mathdoc},
     volume = {81},
     number = {4},
     year = {1997},
     doi = {10.4064/aa-81-4-365-367},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-81-4-365-367/}
}