@article{02124069, title = {Circular binary strings without zigzags.}, journal = {Integers}, volume = {3}, year = {2003}, zbl = {1061.05003}, language = {en}, url = {http://dml.mathdoc.fr/item/02124069} }
Munarini, Emanuele; Salvi, Norma Zagaglia. Circular binary strings without zigzags.. Integers, Tome 3 (2003) . http://gdmltest.u-ga.fr/item/02124069/