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References
1.
Boole, G.
1854
An investigation of the laws of thought . Cambridge .
2.
Patterson, E.M.
;
Rutherford, D.E.
1965
Elementary abstract algebra . London , Oliver and Boyd .
3.
Pierce, C.S.
1933
Collected papers . Cambridge, Mass.
4.
Piaget, J.
1953
Logic and psychology . Manchester University Press .
5.
Sheffer, H.M.
1913
Transactions of the American Mathematical Society
14 : 481 -488 .
6.
Spencer-Brown, G.
1969
Laws of form . London , Allen and Unwin .
