@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa98-2-9,
author = {E. Victor Flynn and Joseph L. Wetherell},
title = {Covering collections and a challenge problem of Serre},
journal = {Acta Arithmetica},
volume = {100},
year = {2001},
pages = {197-205},
zbl = {1049.11066},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa98-2-9}
}
E. Victor Flynn; Joseph L. Wetherell. Covering collections and a challenge problem of Serre. Acta Arithmetica, Tome 100 (2001) pp. 197-205. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa98-2-9/