@article{bwmeta1.element.bwnjournal-article-fmv134i1p3bwm,
author = {Zhi-Wei Sun},
title = {Finite coverings of groups},
journal = {Fundamenta Mathematicae},
volume = {134},
year = {1990},
pages = {37-53},
zbl = {0717.20020},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv134i1p3bwm}
}
Sun, Zhi-Wei. Finite coverings of groups. Fundamenta Mathematicae, Tome 134 (1990) pp. 37-53. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv134i1p3bwm/