@article{CRMATH_2013__351_13-14_507_0,
     author = {\v{S}uni\'c, Zoran},
     title = {Explicit left orders on free groups extending the lexicographic order on free monoids},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {507--511},
     publisher = {Elsevier},
     volume = {351},
     number = {13-14},
     year = {2013},
     doi = {10.1016/j.crma.2013.07.001},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2013.07.001/}
}