@article{GDZPPN002486490,
title = {A Short Proof of a Classical Covering Lemma.},
journal = {Monatshefte f\"ur Mathematik},
volume = {108},
year = {1989},
pages = {5-8},
zbl = {0671.22001},
url = {http://dml.mathdoc.fr/item/GDZPPN002486490}
}
Anker, Jean-Philippe. A Short Proof of a Classical Covering Lemma.. Monatshefte für Mathematik, Tome 108 (1989) pp. 5-8. http://gdmltest.u-ga.fr/item/GDZPPN002486490/