M. A. Arbib, From automata theory to brain theory, Int. J. Man-Machine Stud., 7(3) (1975),
 W. R. Ashby, Design for a brain, Chapman and Hall, London, 1954.
 R. A. Borzooei, Hyper BCK and K-algebras, Ph.D. Thesis, Department of Mathematics,
Shahid Bahonar University of Kerman, Iran, 2000.
 R. A. Borzooei, A. Hasankhani, M. M. Zahedi and Y. B. Jun, On hyper K-algebras, Scientiae
Mathematicae Japonica, 52(1) (2000), 113-121.
 A. W. Burks, Logic, biology and automata-some historical reflections, Int. J. Man-Machine
Stud., 7(3) (1975), 297-312.
 P. Corsini, Prolegomena of hyper group theory, Avian Editor, Italy, 1993.
 P. Corsini and V. Leoreanu, Applications of hyper structure theory, Advances in Mathematics,
Kluwer Academic Publishers, 5 (2003).
 M. Doostfatemeh and S. C. Kremer, New directions in fuzzy automata, International Journal
of Approximate Reasoning, 38 (2005), 175-214.
 J. E. Hopcroft, R. Motwani and J. D. Ullman, Introduction to automata theory, languages
and computation, seconded, Addison-Wesley, Reading, MA, 2001.
 M. Horry and M. M. Zahedi, Uniform and semi-uniform topology on general fuzzy automata,
Iranian Journal of Fuzzy Systems, 6(2) (2009), 19-29.
 M. Horry and M. M. Zahedi, Hypergroups and general fuzzy automata, Iranian Journal of
Fuzzy Systems, 6(2) (2009), 61-74.
 Y. Imai and K. Iseki, On axiom systems of propositional calculi, XIV Proc. Japan Academy,
42 (1966), 19-22.
 D. S. Malik and J. N. Mordeson, Fuzzy discrete structures, Physica-Verlag, NewY ork, 2000.
 F. Marty, Sur une generalization de la notion de groups, 8th Congress Math. Scand naves,
Stockholm, (1934), 45-49.
 W. S. McCulloch and W. Pitts, A logical calculus of the ideas immanent in nervous activity,
Bull. Math. Biophysics., 5 (1943), 115-133.
 J. Meng and Y. B. Jun, BCK-algebra, Kyung Moons, Co., Seoul, 1994.
 M. L. Minsky, Computation: finite and infinite machines, Prentice-Hall, Englewood Cliffs,
NJ, Chapter 3, (1967), 32-66.
 J. N. Mordeson and D. S. Malik, Fuzzy automata and languages, theory and applications,
Chapman and Hall/CRC, London/Boca Raton, FL, 2002.
 M. A. Nasr Azadani and M. M. Zahedi, S-absorbing set and (P)-decomposition in hyper
K-algebras, Italian Journal of Pure and Applied Mathematics, to appear.
 W. Omlin, K. K. Giles and K. K. Thornber, Equivalence in knowledge representation: automata,
runs, and dynamicfuzzy systems, Proc. IEEE, 87(9) (1999), 1623-1640.
 W. Omlin, K. K. Thornber and K. K. Giles, Fuzzy finite-state automata can be deterministically
encoded into recurrent neural networks, IEEE Trans. Fuzzy Systems, 5(1) (1998),
 T. Roodbari, Positive implicative and commutative hyper K-ideals, Ph.D. Thesis, Department
of Mathematics, Shahid Bahonar University of Kerman, Iran, 2008.
 T. Roodbari, L. Torkzadeh and M. M. Zahedi, Normal hyper K-algebras, Sciatica Mathematical
Japonica, 68(2) (2008), 265-278.
 T. Roodbari and M. M. Zahedi, Positive implicative hyper K-ideals II, Scientiae Mathematicae
Japonica, 66(3) (2007), 391-404.
 L. Torkzadeh, Dual positive implicative and commutative hyper K-ideals, Ph.D. Thesis, Department
of Mathematics, Shahid Bahonar University of Kerman, Iran, 2005.
 L. Torkzadeh, T. Roodbari and M. M. Zahedi, Hyper stabilizers and normal hyper BCKalgebras,
Set-Valued Mathematics and Applications, to appear.
 A. Turing, On computable numbers, with an application to the entscheidungs problem, Proc.
London Math. Soc., 42 (1936-37), 220-265.
 J. Von Neumann, Theory of self-reproducing automata, University of Illinois Press, Urbana,
 W. G. Wee, On generalization of adaptive algorithm and application of the fuzzy sets concept
to pattern classification, Ph.D. Thesis, Purdue University, Lafayette, IN, 1967.
 L. A. Zadeh, Fuzzy sets, Information and Control, 8 (1965), 338-353.
 M. M. Zahedi, R. A. Borzooei and H. Rezaei, Some classifications of hyper K-algebra of order
3, Math. Japon., (2001), 133-142.
 M. M. Zahedi, M. Horry and K. Abolpor, Bifuzzy (general) topology on max-min general
fuzzy automata , Advances in Fuzzy Mathematics, 3(1) (2008), 51-68.