1. Weak Convergence of Measures;Bergström,1982
2. Convex Analysis and Measurable Multifunction;Castaing,1977
3. Elementary fuzzy calculus;Goetschel;Fuzzy Sets and Systems,1986
4. Functional analysis and semi-groups;Hille,1957
5. Fuzzy differential equations;Kaleva;Fuzzy Sets and Systems,1987