1. Asay, G. R., & Saari, D. G. (2006). Why negative campaigning? The chaotic dynamics of an election. Unpublished working paper, Institute for Mathematical Behavioral Sciences.
2. Bernhagen, P. (2001). Why parties make a difference: Mandates, ideology and reputation in partisan politics. Unpublished working paper, Department of Political Science, Trinity College Dublin.
3. Black, D., & Newing, R. A. (1951). Committee decisions with complementary valuation. London: Lowe and Brydon.
4. Bradley, W. J., Hodge, J. K., & Kilgour, D. M. (2005). Separable discrete preferences. Mathematical Social Sciences, 49, 335–353.
5. Budge, I., Klingemann, H.-D., Volkens, A., Tannenbaum, E., & Bara, J. (2001). Mapping policy preferences: Estimates for parties, electors, and governments 1945–1998. Oxford: Oxford University Press.