2003-10-05: Polyvalued vs Probabilistic Logic - added
2003-10-05: Polyvalued vs Intuitionistic logics - added
2002-10-03: Polyvalued concepts - layout updated
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2002-07-24: Polyvalued vs Standard logic - updated
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2002-05-30: System PV1 - updated
2002-05-29: Polyvalued concepts - new layout
2002-05-29: System PV1 - new layout
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