1. Armstrong, J. S. (Ed.). (2001). Principles of forecasting: A handbook for researchers and practitioners (Vol. 30). Berlin: Springer Science & Business Media.
2. Baumgartner, F. J. (2003). Behind locked doors: A history of papal elections. New York, NY: Palgrave Macmillan.
3. Campbell, J. E. (1996). Polls and votes. American Politics Quarterly, 24(4), 408–433.
https://doi.org/10.1177/1532673X9602400402
4. Carroll, J. D., & Wish, M. (1975). Multidimensional scaling: Models, methods, and relations to Delphi. In H. Linstone & M. Turoff (Eds.), The Delphi method: Techniques and applications (pp. 396–425). Reading, MA: Addison-Wesley.
5. Clark, J., & Friesen, L. (2009). Overconfidence in forecasts of own performance: An experimental study. Economic Journal, 119(534), 229–251.