Bos, J.W.B.; Koetter, M.; Kolari, J.W.; Kool, C.J.M. - In: European Journal of Operational Research 195 (2009) 1, pp. 251-261
Bank efficiency estimates often serve as a proxy of managerial skill since they quantify sub-optimal production choices. But such deviations can also be due to omitted systematic differences among banks. In this study, we examine the effects of heterogeneity on bank efficiency scores. We compare...