@article{GDZPPN002195577,
title = {Terminating cycles for iterated difference values of five digit integers.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {302},
year = {1978},
pages = {379-388},
zbl = {0384.10003},
url = {http://dml.mathdoc.fr/item/GDZPPN002195577}
}
Prichett, Gordon D. Terminating cycles for iterated difference values of five digit integers.. Journal für die reine und angewandte Mathematik, Tome 302 (1978) pp. 379-388. http://gdmltest.u-ga.fr/item/GDZPPN002195577/