Cooper, W., Seiford, L.M., and Tone, K. (2003) Data Envelopment Analysis   A Comprehensive 

Text with Models, Applications, References and DEA Solver Software, Kluwer Academic 

Publisher, Amsterdam, Boston, 2003. 

Economist Intelligence Unit (2002). The Economist Intelligence Unit e readiness rankings.

http://www.ebusinessforum.com/index.asp?layout=printer friendly&doc_id=5768 (last accessed: 

04/11/2002)

Eurostat (2002). IT expenditure, innovation and research. 

http://europa.eu.int/comm/eurostat/Public/datashop/print 

product/EN?catalogue=Eurostat&product=1 ir071 EN&mode=download 

(last accessed: 21/10/2002) 

EITO (2002). European Information Technology Observatory 2002, Update October 2002.

EITO, Frankfurt 

FSO (2003). Informationstechnologie in Unternehmen, Federal Statistical Office, Wiesbaden, 

Germany 

GFK (2000).  Analyse und Evaluation der Softwareentwicklung in Deutschland . Nuremberg, 

Germany: GFK Marktforschung. 

GITR (2003). Global Information Technology Report 2002 2003   Readiness for the Networked 

World. World Economic Forum, Geneva, Switzerland. 

Golany, B., and Roll, Y. (1989) An Application Procedure for DEA, OMEGA International 

Journal of Management Science; Volume 17 No. 3; 1989. 

IMF (2001). World Economic Outlook. Chapter III: The Information Technology Revolution.

http://www.imf.org/external/pubs/ft/weo/2001/02/pdf/chapter3.pdf (last accessed: 04/10/2002) 

Kraemer, K., Tallon, P.P, Rieger, C. (1999). When Context Matters: Making Sense of Executives'

Perceptions on IT Payoffs using Strategic Intent for IT. CRITO, University of California at 

Irvine, Irvine, California 

Krafft, L. (November 2000). Current status and perspectives for the Internet/e commerce startup 

landscape in Germany. http://www.e startup.org/downld_e/landsca.ppt (last accessed: 

28/10/2002)

Krafft, L. (January 2002). Aktuelle Ausfallraten bei Internet/E commerce Gr ndungen in 

Deutschland (3. Review) http://www.e startup.org/download/kon_6_02.ppt (last accessed: 

28/10/2002)

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