1. Approximate inference with interval-valued fuzzy sets — an outline;Gorzafczany,1983
2. Interval valued fuzzy controller based on verbal model of object;Gorzafczany;Fuzzy Sets and Systems,1988
3. Interval valued L-fuzzy set and its decomposition theorem;Meng;BUSEFAL,1989
4. The basic theories of interval valued fuzzy sets;Meng;Mathmatica Applicate,1993
5. Interval valued fuzzy sets based on normal forms;Turksen;Fuzzy Sets and Systems,1986