Even perfect numbers and their Euler's function.
Asadulla, Syed
International Journal of Mathematics and Mathematical Sciences, Tome 10 (1987), p. 409-412 / Harvested from The Electronic Library of Mathematics
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Publié le : 1987-01-01
DOI : https://doi.org/10.1155/S0161171287000486
EUDML-ID : urn:eudml:doc:46174 
@article{04002160,
     title = {Even perfect numbers and their Euler's function.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {10},
     year = {1987},
     pages = {409-412},
     doi = {10.1155/S0161171287000486},
     zbl = {0618.10001},
     language = {en},
     url = {http://dml.mathdoc.fr/item/04002160}
}

Asadulla, Syed. Even perfect numbers and their Euler's function.. International Journal of Mathematics and Mathematical Sciences, Tome 10 (1987) pp. 409-412. doi : 10.1155/S0161171287000486. http://gdmltest.u-ga.fr/item/04002160/