TY  - JOUR
AU  - Rostamy-Malkhalifeh, M.
AU  - seyed Esmaeili, F.
TI  - Computing the efficiency interval of decision making units (DMUs) having interval inputs and outputs with the presence of negative data
JO  - Journal of New Researches in Mathematics
VL  - 1
IS  - 4
SP  - 5
EP  - 14
PY  - 2016
DO  - 
ER  -