@article{00741557,
title = {How many squares must a binary sequence contain?},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {2},
year = {1995},
zbl = {0816.11007},
language = {en},
url = {http://dml.mathdoc.fr/item/00741557}
}
Fraenkel, Aviezri S.; Simpson, R.Jamie. How many squares must a binary sequence contain?. The Electronic Journal of Combinatorics [electronic only], Tome 2 (1995) . http://gdmltest.u-ga.fr/item/00741557/