1. Fuzzy sets;Zadeh;Information and Control,1965
2. Fuzzy programming and linear programming with several objective functions;Zimmermann;Fuzzy Sets and Systems,1978
3. Nonlinear programming;Kuhn,1951
4. Systems Optimization Theory;Kiyotaka,1976
5. Multicriteria decision-making;Jifa;Applied Mathematics and Computational Mathematics,1980