TY  - JOUR
AU  - Mehrabian, S.
TI  - The Uniqueness of the Overall Assurance Interval for Epsilon in DEA Models by the Direction Method
JO  - Journal of New Researches in Mathematics
VL  - 1
IS  - 2
SP  - 13
EP  - 20
PY  - 2015
DO  - 
ER  -