@article{05787350,
title = {On a property of groups with coverings.},
journal = {Acta Universitatis Apulensis. Mathematics - Informatics},
volume = {21},
year = {2010},
pages = {21-34},
zbl = {1202.20038},
language = {en},
url = {http://dml.mathdoc.fr/item/05787350}
}
Erfanian, Ahmad; Russo, Francesco G. On a property of groups with coverings.. Acta Universitatis Apulensis. Mathematics - Informatics, Tome 21 (2010) pp. 21-34. http://gdmltest.u-ga.fr/item/05787350/