@article{03993675, title = {The power of powerful numbers.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {10}, year = {1987}, pages = {125-130}, doi = {10.1155/S0161171287000152}, zbl = {0614.10012}, language = {en}, url = {http://dml.mathdoc.fr/item/03993675} }
Mollin, R.A. The power of powerful numbers.. International Journal of Mathematics and Mathematical Sciences, Tome 10 (1987) pp. 125-130. doi : 10.1155/S0161171287000152. http://gdmltest.u-ga.fr/item/03993675/