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1 Zadeh, L. A., "The concept of linguistic variable and its application to approximate reasoning I, II, and III" 8 : 199-249, 1975
2 Dubois, D., "Possibility theory:an approach to computerized processing of uncertainty" Plenum Press 1988
3 Zimmermann, H. J., "Optimization in fuzzy environment" 1974
4 Tanaka, H., "On fuzzy mathematical programming" 13 : 37-46, 1974
5 Charnes, A., "Measuring the efficiency of decision making units" 2 : 429-444, 1987
6 Zadeh, L. A., "Fuzzy sets as a basis for a theory of possibility" 1 : 3-28, 1978
7 Zadeh, L. A., "Fuzzy sets" 8 : 338-353, 1965
8 Hougaard, J. L., "Fuzzy scores of technical efficiency" 115 : 529-541, 1999
9 Chen, S. J., "Fuzzy multiple attribute decision making, Methods and Applications" 1992
10 Ganesan, K., "Fuzzy linear programs with trapezoidal fuzzy numbers" 143 : 305-315, 2006
11 Tanaka, H., "Fuzzy linear programming problems with fuzzy numbers" 13 : 1-10, 1984
12 Rommelfanger, H., "Fuzzy linear programming and applications" 92 : 512-527, 1996
13 Lertworasirikul, S., "Fuzzy data envelopment analysis (DEA):a possibility approach" 139 : 379-394, 2003
14 Guo, P., "Fuzzy DEA:a perceptual evaluation method" 119 : 149-160, 2001
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16 Talluri, S., "Data envelopment analysis:models and extensions" 31 : 8-11, 2000
17 Charnes, A., "Data envelopment analysis:Theory, methodology, and applications" 1994
18 Campos, L. M., "A subjective approach for ranking fuzzy numbers" 29 : 145-153, 1989
19 Bortolan, G., "A review of some methods for ranking fuzzy subsets" 15 : 1-19, 1985