1. Baldwin J. F. and B. W. Pilsworth (1982) “Dynamic programming for fuzzy systems with fuzzy environment,” J. Math. Anal. and Appls. 85, 1–23.
2. Bellman R. E. and L. A. Zadeh(1970) “Decision-making in a fuzzy environment,” Management Sct 17, B141–B164.
3. Chang S.S. L. (1969) “Fuzzy dynamic programming and the decision making process,” Proc. 3rd Princeton Conf. on Inf. Sci and Syst. (Princeton, USA), 200–203.
4. Esogbue A. O. (1983a) “Dynamic programming, fuzzy sets, and the modeling of R&D management control systems,” IEEE Trans. on Syst., Man and Cybern. SMC-13,18–30.
5. Esogbue A. O. (1983b) “Some novel applications of fuzzy dynamic programming,” Proc. IEEE, 501–505.