Bardecki, M.J. (1984). Participants response to the Delphi method: an attitudinal perspective. Technological Forecasting and Social Change, Vol. 25, 281-292.
2.
Coates, J.F. (1975). In defense of Delphi. Technological Forecasting and Social Change, Vol. 7, 193-194.
3.
Delbecq, A.L., Van De Ven, A.H. and Gustafson, D.H. (1975). Group techniquesfor program planning: a guide to nominal groups and Delphic processes. Glenview, Illinois : Foresman.
4.
Dickey, J.W. and Watts, T. (1978). Analytical techniques in urban and regional planning . New York: McGraw Hill.
5.
Foley, P. and Masser, I. (1987) (forthcoming). What future for Sheffield? Some businessmen's opinions. Department of Town and Regional Planning, University of Sheffield.
6.
Foley, P., Green, D.H. and Masser, I. (1984). The future of the Sheffield economy: an investigation using the Delphi method, TRP 49, Department of Town and Regional Planning, University of Sheffield, Sheffield .
7.
Helmer, O. (1972). On the future state of the Union. Report 12-27 , Institute for the Future, Menlo Park, California.
8.
Hill, K.Q. and Fowles, J. (1975). The methodological worth of the Delphi forecasting technique. Techological Forecasting and Social Change, Vol. 7, 179-192.
9.
Ley, G.F. and Anderson, G. (1975). The Delphi technique in urban forecasting. Regional Studies, Vol. 9, 243-249.
10.
Linstone, H. A. and Turoff, M. (eds.) (1975). The Delphi method: techniques and applications. Reading, Mass.: Addison Wesley.
11.
Nelms, K.R. and Porter, A.L. (1985). EFTE: an interactive Delphi method. Technological Forecasting and Social Change, Vol. 28, 43-61.
12.
Preble, J.F. (1984). The selection of Delphi panels for strategic planning purposes. Strategic Man. Journal, Vol. 5, 157-170.
13.
Sackman, H. (1975). Delphi critique, expert opinion, forecasting and the group process. Lexington, Mass.: Lexington Books.
14.
Turoff, M.A. (1970). The design of a policy Delphi. Technological Forecasting and Social Change, Vol. 2, 149-171.