@article{DMTCS_2010_special_257_a1,
     author = {Schulz, Matthias},
     title = {Minimal {Recurrent} {Configurations} of {Chip} {Firing} {Games} and {Directed} {Acyclic} {Graphs}},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {DMTCS Proceedings vol. AL, Automata 2010 - 16th Intl. Workshop on CA and DCS},
     year = {2010},
     doi = {10.46298/dmtcs.2756},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.2756/}
}