F. Arroyo, V. Mitrana, A. Păun, M. Păun & J.R. Sánchez Couso (2020):
On the group memory complexity of extended finite automata over groups.
J. Log. Algebraic Methods Program. 117,
pp. 100605,
doi:10.1016/j.jlamp.2020.100605.
B.S. Baker (1974):
Non-context-free grammars generating context-free languages.
Information and Control 24,
pp. 231 – 246,
doi:10.1016/S0019-9958(74)80038-0.
J.L. Balcazar, J. Diaz & J. Gabarró (1995):
Structural Complexity.
Springer-Verlag, Berlin,
doi:10.1007/978-3-642-79235-9.
L. Boasson, B. Courcelle & M. Nivat (1981):
The rational index, a complexity measure for languages.
SIAM J. Computing 10,
pp. 284 – 296,
doi:10.1137/0210020.
R.V. Book (1972):
Terminal context in context-sensitive grammars.
SIAM J. Computing 1,
pp. 20 – 30,
doi:10.1137/0201003.
H. Bordihn & V. Mitrana (2020):
On the degrees of non-regularity and non-context-freeness.
J. Comput. Syst. Sci. 108,
pp. 104 – 117,
doi:10.1016/j.jcss.2019.09.003.
B. Brainerd (1968):
An analog of a theorem about context-free languages.
Information and Control 11,
pp. 561 – 567,
doi:10.1016/S0019-9958(67)90771-1.
N. Chomsky & M. P. Schützenberger (1963):
The algebraic theory of context-free languages.
In: Studies in Logic and the Foundations of Mathematics.
North-Holland, Amsterdam,
pp. 118–161,
doi:10.1016/S0049-237X(08)72023-8.
J. M. Corson (2005):
Extended finite automata and word problems.
J. Algebra Comput. 15,
pp. 455 – 466,
doi:10.1142/S0218196705002360.
K. Culik & H. Maurer (1978):
On the Derivation of Trees.
TR Vol, 18, Institut für Informationsverarbeitung (Graz).
J. Dassow & G. Păun (1989):
Regulated Rewriting in Formal Language Theory.
Springer Berlin, Heidelberg,
doi:10.1007/978-3-642-74932-2.
J. Dassow & V. Mitrana (2000):
Finite automata over free groups.
J. Algebra Comput. 10,
pp. 725 – 737,
doi:10.1142/S0218196700000315.
R. Evey (1963):
The Theory and Application of Pushdown Store Machines.
Doctoral Dissertation, Harvard University.
S. Z. Fazekas, R. Mercaş & O. Wu (2022):
Complexities for jumps and sweeps.
Journal of Automata, Languages and Combinatorics 27,
pp. 131–149,
doi:10.25596/jalc-2022-131.
H. Fernau & R. Stiebe (2002):
Sequential grammars and automata with valences.
Theoret. Comput. Sci. 276,
pp. 377 – 405,
doi:10.1016/S0304-3975(01)00282-1.
J. Gabarro (1983):
Initial index:a new complexity function for languages.
In: International Colloquium on Automata, Languages, and Programming ICALP.
LNCS 154 Springer Verlag,
pp. 226–236,
doi:10.1007/BFb0036911.
J. Gabarro (1984):
Pushdown space complexity and related full-A.F.L.s.
In: Annual Symposium on Theoretical Aspects of Computer Science STACS.
LNCS 166 Springer Verlag,
pp. 250–259,
doi:10.1007/3-540-12920-0_23.
R. H. Gilman & M. Shapiro (1998):
On groups whose word problem is solved by a nested stack automaton.
arXiv:math.GR/9812028,
doi:10.48550/arXiv.math/9812028.
S. Ginsburg & S. Greibach (1966):
Mappings which preserve context-sensitive languages.
Information and Control 9,
pp. 563 – 582,
doi:10.1016/S0019-9958(66)80016-5.
J. Goldstine (1972):
Substitution and bounded languages.
J. Comput. Syst. Sci. 6,
pp. 9 – 29,
doi:10.1016/S0022-0000(72)80038-2.
T. Hibbard (1966):
Scan Limited Automata and Context Limited Grammars.
Doctoral Dissertation, University of California at Los Angeles.
J.E. Hopcroft & J.D. Ullman (1979):
Introduction to Automata Theory, Languages and Computation.
Addison-Wesley, Reading, Mass..
M. Kambites (2006):
Word problems recognisable by deterministic blind monoid automata.
Theoret. Comput. Sci. 362,
pp. 232 – 237,
doi:10.1016/j.tcs.2006.06.026.
R. C. Lyndon & P. E. Schupp (1977):
Combinatorial Group Theory.
Springer-Verlag, Berlin,
doi:10.1007/978-3-642-61896-3.
C. Martín-Vide, V. Mitrana & Gh. Păun (2003):
Formal Languages and Applications.
Springer Verlag,
doi:10.1007/978-3-540-39886-8.
G. Matthews (1963):
Discontinuity and asymmetry in phrase structure grammars.
Information and Control 6,
pp. 137–146,
doi:10.1016/S0019-9958(63)90179-7.
G. Matthews (1964):
A note on asymmetry in phrase structure grammars.
Information and Control 7,
pp. 360–365,
doi:10.1016/S0019-9958(64)90406-1.
A. Meduna & P. Zemek (2012):
Jumping finite automata.
Int. J. Found. Comput. Sci. 23,
pp. 1555–1578,
doi:10.1142/S0129054112500244.
V. Mitrana & R. Stiebe (2001):
Extended finite automata over groups.
Discrete Appl. Math. 108,
pp. 287 – 300,
doi:10.1016/S0166-218X(00)00200-6.
B. Nagy & L. Kovács (2014):
Finite automata with translucent letters applied in natural and formal language theory.
In: Transactions on Computational Collective Intelligence.
LNCS 8790 Springer Verlag,
pp. 107–127,
doi:10.1007/978-3-662-44994-3_6.
J. J. Rotman (1995):
An Introduction to the Theory of Groups.
Springer-Verlag, Berlin,
doi:10.1007/978-1-4612-4176-8.
G. Rozenberg & A. Salomaa (1997):
Handbook of Formal Languages.
Springer Verlag,
doi:10.1007/978-3-642-59136-5.