@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa107-2-6,
author = {J\"orn Steuding},
title = {Upper bounds for the density of universality},
journal = {Acta Arithmetica},
volume = {108},
year = {2003},
pages = {195-202},
zbl = {1167.11314},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa107-2-6}
}
Jörn Steuding. Upper bounds for the density of universality. Acta Arithmetica, Tome 108 (2003) pp. 195-202. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa107-2-6/