Short equational bases for MV-Algebras, commutative BCK-Algebras and LBCK-algebras
          Araújo, João; Kinyon, M.; Vigário, Edgar  
          
          Submitted  
          http://arxiv.org/pdf/1007.1601  
           
          We show that the variety of MV-algebras is 2-based and we offer elegant 2-bases for the varieties of commutative BCK-algebras and  LBCK-algebras.  
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