Lin, Weibin; Yang, Jin; Chen, Bin - In: Energies 4 (2011) 9, pp. 1376-1390
trends of integrated energy and environment efficiency of DMUs from 2006 to 2010 are also demonstrated by the Malmquist index …. Results show that the integrated energy and environment efficiency varies for each DMU. GGI were both 1 in Beijing and …