REFERENCES


   [A]  J. Adams, HOW TO SOLVE RUBIK'S REVENGE, Dial Press, NY, 
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   [Ar] M. Artin, ALGEBRA, Prentice-Hall, 1991

   [B] C. Bandelow, INSIDE RUBIK'S CUBE AND BEYOND, Birkhauser 
       Boston, 1980

   [BCG]  Berlekamp, J. Conway, R. Guy, WINNING WAYS, II, Academic
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   [BH] R. Banerji, D. Hecker, "The slice group in Rubik's cube",
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   [Bu] G. Butler, FUNDAMENTAL ALGORITHMS FOR PERMUTATION GROUPS, 
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        vol 559, 1991

   [C] J. Crossley, et al, WHAT IS MATHEMATICAL LOGIC?, Dover, 
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   [CL] ftp archives of the "cube-lovers" list at
        ftp://ftp.ai.mit.edu/pub/cube-lovers/

   [EK] J. Ewing, C. Kosniowski, PUZZLE IT OUT, CUBES, GROUPS, AND
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   [G] A. Gaglione, AN INTRODUCTION TO GROUP THEORY, NRL, 1992

   [GT] K. Gold, E. Turner, "Rubik's group", Amer. Math. Monthly, 
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   [L] M. E. Larsen, "Rubik's revenge: the group theoretical 
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   [M] R. E. Moritz, MEMORABILIA MATHEMATICA, MacMillan Co, NY, 
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   [NST] P. Neumann, G. Stoy, E. Thompson, GROUPS AND GEOMETRY,
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   [R] J. J. Rotman, AN INTRODUCTION TO THE THEORY OF GROUPS,
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   [Ru] E. Rubik, et al, RUBIK'S CUBIC COMPENDIUM, Oxford Univ 
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   [S]  R. Schmalz, OUT OF THE MOUTHS OF MATHEMATICIANS,  Math. 
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   [Si] D. Singmaster, NOTES ON RUBIK'S MAGIC CUBE, Enslow, 1981

   [St] R. Stoll, SET THEORY AND LOGIC, Dover, 1963

   [T] Thai, ``The winning solution to Rubik's Revenge'', Banbury 
       Books, 1982