@article{10_37236_412,
     author = {Arseny M. Shur},
     title = {On ternary square-free circular words},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/412},
     zbl = {1213.68480},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/412/}
}