@article{05688297,
title = {On the Euler function of Fibonacci numbers.},
journal = {Journal of Integer Sequences [electronic only]},
volume = {12},
year = {2009},
zbl = {1201.11006},
language = {en},
url = {http://dml.mathdoc.fr/item/05688297}
}
Luca, Florian; Mejía Huguet, V. Janitzio; Nicolae, Florin. On the Euler function of Fibonacci numbers.. Journal of Integer Sequences [electronic only], Tome 12 (2009) . http://gdmltest.u-ga.fr/item/05688297/