On powerful numbers.
Mollin, R.A. ; Walsh, P.G.
International Journal of Mathematics and Mathematical Sciences, Tome 9 (1986), p. 801-806 / Harvested from The Electronic Library of Mathematics
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Publié le : 1986-01-01
DOI : https://doi.org/10.1155/S0161171286000984
EUDML-ID : urn:eudml:doc:46122 
@article{03979148,
     title = {On powerful numbers.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {9},
     year = {1986},
     pages = {801-806},
     doi = {10.1155/S0161171286000984},
     zbl = {0606.10010},
     language = {en},
     url = {http://dml.mathdoc.fr/item/03979148}
}

Mollin, R.A.; Walsh, P.G. On powerful numbers.. International Journal of Mathematics and Mathematical Sciences, Tome 9 (1986) pp. 801-806. doi : 10.1155/S0161171286000984. http://gdmltest.u-ga.fr/item/03979148/