2 1 10 Fuzzy Logic in Artificial Intelligence Ralescu, Anca L. Editor mixed material 3540584099 Berlin Springer-Verlag 1994 000011298.jpg Fuzzy logic and fuzzy control Eklund, Peter W. Editor Driankov, Dimiter Editor Ralescu, Anca L. Editor mixed material 3540582797 Berlin Springer-Verlag 1991