1. Monoidal t-norm based logic: towards a logic for left-continuous t-norms;Esteva;Fuzzy Sets and Systems,2001
2. An Introduction to Mathematical Logic and Resolution Principle;Wang,2003
3. Metamathematics of Fuzzy Logic;Hajek,1998
4. On equivalent forms of fuzzy logic systems NM and IMTL;Pei;Fuzzy Sets and Systems,2003
5. MV-algebras, BL-algebras, R0-algebras and multiple-valued logic;Wang;Fuzzy Systems and Mathematics,2002