@article{05688319,
title = {Divisibility by 3 of even multiperfect numbers of abundancy 3 and 4.},
journal = {Journal of Integer Sequences [electronic only]},
volume = {13},
year = {2010},
zbl = {1206.11008},
language = {en},
url = {http://dml.mathdoc.fr/item/05688319}
}
Broughan, Kevin A.; Zhou, Qizhi. Divisibility by 3 of even multiperfect numbers of abundancy 3 and 4.. Journal of Integer Sequences [electronic only], Tome 13 (2010) . http://gdmltest.u-ga.fr/item/05688319/