@article(fratani-senizergues,
 author       = "S. Fratani G. S\'enizergues",
 year         = "2006",
 title        = "Iterated pushdown automata and sequences of rational numbers",
 journal      = "Annals of pure and applied logic",
 volume       = "141",
 pages        = "363--411",
 doi          = "10.1016/j.apal.2005.12.004",
)
@article(mmgsFI,
 author       = "M. Margenstern G. Skordev",
 year         = "2003",
 title        = "Tools for devising cellular automata in the hyperbolic 3D space",
 journal      = "Fundamenta Informaticae",
 volume       = "58",
 number       = "2",
 pages        = "369--398",
)
@article(gms-alg,
 author       = "C. Goodman-Strauss",
 year         = "2009",
 title        = "Regular production systems and triangle tilings",
 journal      = "Theoretical Computer Science",
 volume       = "410",
 pages        = "1534--1549",
 doi          = "10.1016/j.tcs.2008.12.012",
)
@article(greibach,
 author       = "S. Greibach",
 year         = "1970",
 title        = "Full AFL's and nested iterated substitution",
 journal      = "Information and Control",
 volume       = "16",
 number       = "1",
 pages        = "7--35",
 doi          = "10.1016/s0019-9958(70)80039-0",
)
@book(kelarev,
 author       = "A.V. Kelarev",
 year         = "2003",
 title        = "Graph Algebras and Automata",
 publisher    = "Marcel Dekker",
 address      = "New York",
)
@article(mmJUCSii,
 author       = "M. Margenstern",
 year         = "2000",
 title        = "New Tools for Cellular Automata of the Hyperbolic Plane",
 journal      = "Journal of Universal Computer Science",
 volume       = "6",
 number       = "12",
 pages        = "1226--1252",
 doi          = "10.3217/jucs-006-12-1226",
)
@article(mmJUCStile,
 author       = "M. Margenstern",
 year         = "2002",
 title        = "Tiling the hyperbolic plane with a single pentagonal tile",
 journal      = "Journal of Universal Computer Science",
 volume       = "8",
 number       = "2",
 pages        = "297--316",
 doi          = "10.3217/jucs-008-02-0297",
)
@article(mmJUCS4D,
 author       = "M. Margenstern",
 year         = "2004",
 title        = "The tiling of the hyperbolic $4D$ space by the 120-cell is combinatoric",
 journal      = "Journal of Universal Computer Science",
 volume       = "10",
 number       = "9",
 pages        = "1212--1238",
 doi          = "10.3217/jucs-010-09-1212",
)
@book(mmbook1,
 author       = "M. Margenstern",
 year         = "2007",
 title        = "Cellular Automata in Hyperbolic Spaces, volume I : Theory",
 edition      = "first",
 series       = "Advances in Unconventional Computing and Cellular Automata, Editor: Andrew Adamatzky",
 volume       = "1",
 publisher    = "Old City Publishing-\'Edition des archives contemporaines",
 address      = "Philadelphia, PA, USA - Paris, France",
)
@book(mmbook2,
 author       = "M. Margenstern",
 year         = "2008",
 title        = "Cellular Automata in Hyperbolic Spaces, volume II : Implementation and Computations",
 edition      = "first",
 series       = "Advances in Unconventional Computing and Cellular Automata, Editor: Andrew Adamatzky",
 volume       = "2",
 publisher    = "Old City Publishing-\'Edition des archives contemporaines",
 address      = "Philadelphia, PA, USA - Paris, France",
)
@article(mmISRN,
 author       = "M. Margenstern",
 year         = "2012",
 title        = "An Application of Iterative Pushdown Automata to Contour Words of Balls and Truncated Balls in Hyperbolic Tessellations",
 journal      = "ISRN Algebra",
 volume       = "2012",
 pages        = "14p",
 doi          = "10.5402/2012/742310",
)
@article(maslov,
 author       = "A.N. Maslov",
 year         = "1974",
 title        = "The hierarchy of indexed languages",
 journal      = "Soviet Mathematics, Doklady",
 volume       = "15",
 pages        = "1170--1174",
)