1. Integrals of set-valued mappings;Aumann;J. Math. Anal. Appl.,1965
2. A differential calculus for multifunctions;Banks;J. Math. Anal. Appl.,1970
3. On fuzzy mapping and control;Chang;IEEE Trans. Systems Man Cybernet.,1972
4. Integration of correspondences;Debreu,1966
5. Towards fuzzy analysis: Integration and differentiation of fuzzy functions;Dubois;Fuzzy Algebra, Analysis Logics, Purdue University TREE 78-13,1978