1. Foresight with Delphi surveys in Japan;Cuhls;Technol. Anal. Strateg. Manag.,2001
2. National technology foresight activities around the globe: resurrection and new paradigms;Grupp;Technol. Forecast. Soc. Change,1999
3. D. Loveridge, L. Georghiou, M. Nedeva. United Kingdom Technology Foresight Programme: Delphi Survey” A Report to the Office of Science and Technology, PREST, University of Manchester, ISBN 0 946007 06 3, 1995.
4. K. Cuhls, Foresight / Vorausschau: Delphi Studien zur globalen Entwicklung in Wissenschaft und Technik, in Trendforschung – Die Märkte von morgen entdecken, IHK, Nordreihn-Westfalen, 2006.
5. The Delphi Method: Techniques and Applications;Linstone,1975