@article{CMJ_2006__56_2_a29,
     author = {Nebesk\'y, Ladislav},
     title = {Travel groupoids},
     journal = {Czechoslovak Mathematical Journal},
     pages = {659--675},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {2006},
     mrnumber = {2291765},
     zbl = {1157.20336},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_2_a29/}
}