5Aigner, D., C. A. K. Lovell and P. Schmidt, 1977,Formulation and estimation of stochastic frontier production models, Journal of Econometrics 6.
6Bauer, P., 1990, Recent developments in the econometric estimations of frontier, Journal of Econometrics 46.
7Berger, A. N., 1995, The profit-structure relationship in banking: Tests of market-power and efficient-structure hypotheses, Journal of Money, Credit and Banking.
8Berger, A.N. and T. Hannah, 1989, The price- concentration relationship in banking, The Review of Economics and Statistics 71.
9Aigner,D.,C.A.K.Lovell and P.Schmidt,1977,Formulation and estimation of stochastic frontier production models,Journal of Econometrics 6.
10Bauer,P.,1990,Recent developments in the econometric estimations of frontiers,Journal of Econometrics 46.
9URI N D. Incentive regulation and the change in productive efficien- cy of local exchange carriers [ J ]. Applied Mathematical Modelling, 2001, 25 (5): 335-345.
10URI N D. Service quality effects of incentive regulation on access service in telecommunications in the United States [ J ]. European journal of law and economics, 2003, 16 (3) : 369 -390.
