@article{05138324,
title = {Efficient lower bounds on the number of repetition-free words.},
journal = {Journal of Integer Sequences [electronic only]},
volume = {10},
year = {2007},
zbl = {1118.05003},
language = {en},
url = {http://dml.mathdoc.fr/item/05138324}
}
Kolpakov, Roman. Efficient lower bounds on the number of repetition-free words.. Journal of Integer Sequences [electronic only], Tome 10 (2007) . http://gdmltest.u-ga.fr/item/05138324/