@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/