@article{10_37236_1843,
     author = {Geoffrey Exoo},
     title = {Voltage graphs, group presentations and cages},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {1},
     doi = {10.37236/1843},
     zbl = {1056.05075},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1843/}
}