@article{bwmeta1.element.bwnjournal-article-aav28i2p147bwm,
author = {Olson, John},
title = {Sums of sets of group elements},
journal = {Acta Arithmetica},
volume = {26},
year = {1975},
pages = {147-156},
zbl = {0318.10035},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav28i2p147bwm}
}
Olson, John. Sums of sets of group elements. Acta Arithmetica, Tome 26 (1975) pp. 147-156. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav28i2p147bwm/