On the distribution of perfect totients.
Luca, Florian
Journal of Integer Sequences [electronic only], Tome 9 (2006), / Harvested from The Electronic Library of Mathematics
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Publié le : 2006-01-01
EUDML-ID : urn:eudml:doc:53022 
@article{05068478,
     title = {On the distribution of perfect totients.},
     journal = {Journal of Integer Sequences [electronic only]},
     volume = {9},
     year = {2006},
     zbl = {1107.11039},
     language = {en},
     url = {http://dml.mathdoc.fr/item/05068478}
}

Luca, Florian. On the distribution of perfect totients.. Journal of Integer Sequences [electronic only], Tome 9 (2006) . http://gdmltest.u-ga.fr/item/05068478/