6BERGER A N,HUMPHREY D B.Efficiency of financial institutions:International survey and directions for future research[J].European Journal of Operational Researeh,1997,98:175-212.
7Serrano-Cinea C,Fuertes-Calle'n Y,MarMolinero C.Measuring DEA effieieney in internet companies.Decision Support Systems 2005;38:557-73.
8Chien-Ta Bruce Ho,Desheng Dash Wu,Online banking performance evaluation using data envelopment analysis and pfineipal component analysis[J].Computers & Operations Research 2009 (36):1835-1842.