@article{04122053,
title = {How many numbers satisfy the },
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {12},
year = {1989},
pages = {791-796},
doi = {10.1155/S0161171289000979},
zbl = {0685.10008},
language = {en},
url = {http://dml.mathdoc.fr/item/04122053}
}
Krasikov, I. How many numbers satisfy the . International Journal of Mathematics and Mathematical Sciences, Tome 12 (1989) pp. 791-796. doi : 10.1155/S0161171289000979. http://gdmltest.u-ga.fr/item/04122053/