On an asymptotic formula for the Niven numbers.
Cooper, Curtis N. ; Kennedy, Robert E.
International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985), p. 537-543 / Harvested from The Electronic Library of Mathematics
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Publié le : 1985-01-01
DOI : https://doi.org/10.1155/S0161171285000576
EUDML-ID : urn:eudml:doc:46003 
@article{03931101,
     title = {On an asymptotic formula for the Niven numbers.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {8},
     year = {1985},
     pages = {537-543},
     doi = {10.1155/S0161171285000576},
     zbl = {0582.10007},
     language = {en},
     url = {http://dml.mathdoc.fr/item/03931101}
}

Cooper, Curtis N.; Kennedy, Robert E. On an asymptotic formula for the Niven numbers.. International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985) pp. 537-543. doi : 10.1155/S0161171285000576. http://gdmltest.u-ga.fr/item/03931101/