Universes of Fuzzy Sets and Axiomatizations of Fuzzy Set Theory. Part II: Category Theoretic Approaches.

Siegfried Gottwald Universes of Fuzzy Sets and Axiomatizations of Fuzzy Set Theory. Part II: Category Theoretic Approaches. 23-50 2006 84 Studia Logica 1 http://dx.doi.org/10.1007/s11225-006-9001-1 db/journals/sLogica/sLogica84.html#Gottwald06a