@article{JRAM_1978__0303_0304_152067,
     author = {Gordon D. Prichett},
     title = {Terminating cycles for iterated difference values of five digit integers.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {379--388},
     publisher = {mathdoc},
     volume = {0303_0304},
     year = {1978},
     zbl = {0384.10003},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__0303_0304_152067/}
}