Jahanshahloo GR, RK Matin and AH Vencheh (2004). “On FDH Efficiency Analysis with Interval Data.” Appl Math Comput 159(1): 47-55.

Jahanshahloo GR, RK Matin and AH Vencheh (2004). “On FDH Efficiency Analysis with Interval Data.” Appl Math Comput 159(1): 47-55.

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