@article{01118072,
title = {On cycles in the coprime graph of integers.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {4},
year = {1997},
zbl = {0932.11013},
language = {en},
url = {http://dml.mathdoc.fr/item/01118072}
}
Erdős, Paul; Sarkozy, Gabor N. On cycles in the coprime graph of integers.. The Electronic Journal of Combinatorics [electronic only], Tome 4 (1997) . http://gdmltest.u-ga.fr/item/01118072/