@article{1250127220,
author = {Lacampagne, G.B. and Selfridge, J.L},
title = {Large highly powerful numbers are cubeful},
journal = {Rocky Mountain J. Math.},
volume = {15},
number = {4},
year = {1985},
pages = { 459-460},
language = {en},
url = {http://dml.mathdoc.fr/item/1250127220}
}
Lacampagne, G.B.; Selfridge, J.L. Large highly powerful numbers are cubeful. Rocky Mountain J. Math., Tome 15 (1985) no. 4, pp. 459-460. http://gdmltest.u-ga.fr/item/1250127220/