@article{05274262, title = {Primes in classes of the iterated totient function.}, journal = {Journal of Integer Sequences [electronic only]}, volume = {11}, year = {2008}, zbl = {1146.11002}, language = {en}, url = {http://dml.mathdoc.fr/item/05274262} }
Noe, Tony D. Primes in classes of the iterated totient function.. Journal of Integer Sequences [electronic only], Tome 11 (2008) . http://gdmltest.u-ga.fr/item/05274262/