1Trends in the efficiency of Singapore's commercial banking groups: A non-sto- chastic frontier DEA window analysis approach.http: //www.emeraldinsight. com /j o urn als. htm? articleid= 1589010&show=abstract 2.
2http: //www.smu.edu.sg/ news_room/smu in the news/2009/ sources/SGPressCentre_20090626_l .pdf.