@article{01264487,
title = {Refactorable numbers -- a machine invention.},
journal = {Journal of Integer Sequences [electronic only]},
volume = {2},
year = {1999},
zbl = {1036.11540},
language = {en},
url = {http://dml.mathdoc.fr/item/01264487}
}
Colton, Simon. Refactorable numbers -- a machine invention.. Journal of Integer Sequences [electronic only], Tome 2 (1999) . http://gdmltest.u-ga.fr/item/01264487/