@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa134-1-7,
author = {D. E. Welch},
title = {Farey fractions with prime denominators},
journal = {Acta Arithmetica},
volume = {135},
year = {2008},
pages = {93-99},
zbl = {1231.11019},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa134-1-7}
}
D. E. Welch. Farey fractions with prime denominators. Acta Arithmetica, Tome 135 (2008) pp. 93-99. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa134-1-7/