5Charnes A,Cooper W W,Rhodes E.Measuring the efficiency of decision making units[J].European Journal of OperationalResearch,1978,2(6):429-444.
6Liu Lixia,Li Ning,Lu Xiaodong.Studies on two-stage DEA model with preference information for multiple inputs and outputssystem[J].Energy Procedia,2011,13(9):6129-6137.
7Yang Yinsheng,Ma Benjiang,Masayuki Koike.Efficiency-measuring DEA model for production system with k independentsubsystems[J].Journal of the Operations Research Society of Japan,2000,4(3):343-353.
8Kao C.Efficiency measurement for parallel production systems[J].European Journal of Operational Research,2009,196(3):1107-1112.
