7Feng G,Serletis A. Efficiency,technical change,and re-turns to scale in large US banks:Panel data evidence from an output distance function satisfying theoretical regularity[J].Journal of Bank-ing\& Finance,2010,(01).
8Afsharian M,Kryvko A,Reichling P. Efficiency and its im-pact on the performance of European commercial banks[M].Univ.,Faculty of Economics and Management,2011.
9Tsolas I E. Relative profitability and stock market performance of listed commercial banks on the Athens Exchange:a non-parametric approach[J].IMA JOURNAL OF MANAGEMENT MATHEMATICS,2011,(04).
10Chortareas G E,Garza-Garcia J G,Girardone C. Banking sector performance in Latin America:market power versus efficiency[J].REVIEW OF DEVELOPMENT ECONOMICS,2011,(02).