@article{1183419950,
author = {Carmichael, R. D.},
title = {Even multiply perfect numbers of five different prime factors},
journal = {Bull. Amer. Math. Soc.},
volume = {15},
number = {3},
year = {1908},
pages = { 7-8},
language = {en},
url = {http://dml.mathdoc.fr/item/1183419950}
}
Carmichael, R. D. Even multiply perfect numbers of five different prime factors. Bull. Amer. Math. Soc., Tome 15 (1908) no. 3, pp. 7-8. http://gdmltest.u-ga.fr/item/1183419950/