8N.Murakami,D.Liu,K.Otsuka.Market Reform,Division of Labor and Increasing Advantage of Small Scale Enterprises:The Case of Machine Tool Industry in China[J].Journal of Comparative Economics,1996(23).
9Charnes,A.,Cooper,W.W.,Rhodes,E.Measuring the Efficiency of Decision Making Units[J].European Journal of Operational Research,1978,2(6):429-444.
10Subal C.Kumbhakar.A Reexamination of Returns to Scale,Density and Technical Progress in U.S.Airlines[J].Southern Economic Journal,1990,57(2):Oct:428-442.
