@article(albert_culik_ii,
 author       = "Jurgen Albert and Karel Culik II",
 year         = "1987",
 title        = "A simple universal cellular automaton and its one-way and totalistic version",
 journal      = "Complex Systems",
 volume       = "1",
 number       = "1",
 pages        = "1--16",
)
@book(codd,
 author       = "E.F. Codd",
 year         = "1968",
 title        = "Cellular Automata",
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)
@article(cook,
 author       = "M. Cook",
 year         = "2004",
 title        = "Universality in Elementary Cellular Automata",
 journal      = "Complex Systems",
 volume       = "15",
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 pages        = "1--40",
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@article(alvy_smith_iii,
 author       = "Alvy Smith III",
 year         = "1971",
 title        = "Simple computation-universal cellular spaces",
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 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",
)
@inproceedings(mmstrong,
 author       = "M. Margenstern",
 year         = "2012",
 title        = "Universality and the Halting Problem for Cellular Automata in Hyperbolic Spaces: The Side of the Halting Problem",
 editor       = "N. JONOSKA J. DURAND-LOSE",
 booktitle    = "Unconventional Computation and Natural Computation",
 volume       = "7445",
 organization = "UCNC 2012",
 publisher    = "Springer",
 pages        = "12--33",
 doi          = "10.1007/978-3-642-32894-7_5",
)
@book(mmbook3,
 author       = "M. Margenstern",
 year         = "2013",
 title        = "Small Universal Cellular Automata, A Collection of Jewels",
 edition      = "first",
 series       = "Emergence, Complexity and Computation",
 publisher    = "Springer",
 doi          = "10.1007/978-3-642-36663-5",
)
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 year         = "1990",
 title        = "Universal Computations in Simple One-Dimensional Cellular Automata",
 journal      = "Complex Systems",
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 pages        = "299--318",
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@book(minsky,
 author       = "M. L. Minsky",
 year         = "1967",
 title        = "Computation: Finite and Infinite Machines",
 edition      = "first",
 series       = "Advances in Unconventional Computing and Cellular Automata, Editor: Andrew Adamatzky",
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 publisher    = "Prentice Hall",
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)
@article(coke-minsky,
 author       = "Cocke J. Minsky M.",
 year         = "1964",
 title        = "Universality of tag systems with $P=2$",
 journal      = "Journal of the ACM",
 volume       = "11",
 number       = "1",
 pages        = "15--20",
 doi          = "10.1145/321203.321206",
)
@article(robinsonMT,
 author       = "R.M. Robinson",
 year         = "1991",
 title        = "Minsky's small universal Turing machine",
 journal      = "International Journal of Mathematics",
 volume       = "2",
 number       = "5",
 pages        = "551--562",
 doi          = "10.1142/S0129167X91000302",
)
@article(rogozhinMI,
 author       = "Yu. V. Rogozhin",
 year         = "1982",
 title        = "Sem' Universal'nykh mashin Tjuringa",
 journal      = "Matematicheskie Issledovanija",
 volume       = "69",
 number       = "2",
 pages        = "76--90",
 note         = "Seven universal Turing machines (in Russian)",
)
@article(rogozhinTCS,
 author       = "Yu. V. Rogozhin",
 year         = "1996",
 title        = "Small Universal Turing Machines",
 journal      = "Theoretical Computer Science",
 volume       = "168",
 number       = "2",
 pages        = "215--240",
 doi          = "10.1016/s0304-3975(96)00077-1",
)
@book(wolfram,
 author       = "S. Wolfram",
 year         = "2002",
 title        = "A New Kind of Science",
 publisher    = "Wolfram Media",
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@inproceedings(woodsneary,
 author       = "T. Neary \& D. Woods",
 year         = "2012",
 title        = "The Compexity of Small Universal Turing Machines: A Survey",
 volume       = "7147",
 organization = "SOFSEM 2012",
 publisher    = "Springer",
 pages        = "385--405",
 doi          = "10.1007/978-3-642-27660-6_32",
)