@article{04127293,
title = {On the natural density of the range of the terminating nines function.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {12},
year = {1989},
pages = {805-808},
doi = {10.1155/S0161171289000992},
zbl = {0688.10006},
language = {en},
url = {http://dml.mathdoc.fr/item/04127293}
}
Kennedy, Robert K.; Cooper, Curtis N.; Drobot, Vladimir; Hickling, Fred. On the natural density of the range of the terminating nines function.. International Journal of Mathematics and Mathematical Sciences, Tome 12 (1989) pp. 805-808. doi : 10.1155/S0161171289000992. http://gdmltest.u-ga.fr/item/04127293/