9Classens, S., Demirgc-Kunt, A., Huizinga, H., 2001. How Does Foreign Entry Affect Domestic Banking Markets? [J]. Journal of Banking &Finance, (25) : 891-911.
10CoeLli, T.J., and Perelman, S., 1996. A Comparison of Parametric and Non-Parametric Distance Functions: With Application to European Railways[R]. CREPP Discussion Paper. Liege: University of Liege.