@article{05019509,
title = {On the number of prime divisors of the iterates of the Carmichael function.},
journal = {Mathematica Pannonica},
volume = {16},
year = {2005},
pages = {205-209},
zbl = {1119.11058},
language = {en},
url = {http://dml.mathdoc.fr/item/05019509}
}
Kátai, Imre. On the number of prime divisors of the iterates of the Carmichael function.. Mathematica Pannonica, Tome 16 (2005) pp. 205-209. http://gdmltest.u-ga.fr/item/05019509/