1. Quantales, observational logic and process semantics;Abramsky;Math. Struct. Comput. Sci.,1993
2. Abstract and Concrete Categories: The Joy of Cats;Adámek,1990
3. Categorical construction of the MacNeille completion;Banaschewski;Arch. Math.,1967
4. Fuzzy Relational Systems: Foundations and Principles;Bělohlávek,2002
5. Fuzzy Logic and Mathematics: A Historical Perspective;Bělohlávek,2017