@article{TAC_2011_25_a21,
     author = {Terrence Bisson and Aristide Tsemo},
     title = {Symbolic dynamics and the category of graphs},
     journal = {Theory and applications of categories},
     pages = {614--640},
     publisher = {mathdoc},
     volume = {25},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2011_25_a21/}
}