@article{10_2140_agt_2005_5_129,
     author = {Elder, Murray},
     title = {Regular geodesic languages and the falsification by fellow traveler property},
     journal = {Algebraic and Geometric Topology},
     pages = {129--134},
     year = {2005},
     volume = {5},
     number = {1},
     doi = {10.2140/agt.2005.5.129},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2005.5.129/}
}