Citation:
Wang, X. , HE, F. E. N. G. , RUAN, J. U. N. H. U. , & Weber, O. . (2017). A HYBRID MEASURE OF ENERGY EFFICIENCY BASED ON FUZZY DEA WITH UNDESIRABLE CONSTRAINTS: AN EMPIRICAL ANALYSIS FOR G20 COUNTRIES. ICIC express letters. Part B, Applications: an international journal of research and surveysICIC express letters. Part B, Applications: an international journal of research and surveys, 8, 735-742.