Koetter, Michael; Karmann, Alexander; Fiorentino, Elisabetta - Deutsche Bundesbank - 2006
banks and analyze whether efficiency measures yield consistent results according to five criteria between 1993 and 2004 …-based measures of performance. We find that non-parametric methods are particularly sensitive to measurement error and outliers …. Furthermore, our results show that accounting for systematic differences among commercial, cooperative and savings banks is …