@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa119-2-4,
author = {Guillaume Bordes},
title = {Sum-sets of small upper density},
journal = {Acta Arithmetica},
volume = {117},
year = {2005},
pages = {187-200},
zbl = {1078.11006},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa119-2-4}
}
Guillaume Bordes. Sum-sets of small upper density. Acta Arithmetica, Tome 117 (2005) pp. 187-200. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa119-2-4/