Meada Y, T Entani and H Tanaka (1998). “Fuzzy DEA with Interval Efficiency.? in Proceedings of 6th European Congress on Intelligent Techniques and Soft Computing, Verlag Mainz. 2: 1067-1071.
Meada Y, T Entani and H Tanaka (1998). “Fuzzy DEA with Interval Efficiency.? in Proceedings of 6th European Congress on Intelligent Techniques and Soft Computing, Verlag Mainz. 2: 1067-1071.