A note on perfect totient numbers.
Deng, Moujie
Journal of Integer Sequences [electronic only], Tome 12 (2009), / Harvested from The Electronic Library of Mathematics
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Publié le : 2009-01-01
EUDML-ID : urn:eudml:doc:223005 
@article{05688293,
     title = {A note on perfect totient numbers.},
     journal = {Journal of Integer Sequences [electronic only]},
     volume = {12},
     year = {2009},
     zbl = {1196.11009},
     language = {en},
     url = {http://dml.mathdoc.fr/item/05688293}
}

Deng, Moujie. A note on perfect totient numbers.. Journal of Integer Sequences [electronic only], Tome 12 (2009) . http://gdmltest.u-ga.fr/item/05688293/