Goertz, Gary, and James Mahoney. 2005. “Two-Level Theories and Fuzzy-Set Analysis.”Sociological Methods & Research33 (4): 497-538.
2.
Katz, Aaron, Matthias vom Hau, and James Mahoney. 2005. “Explaining the Great Reversal in Spanish America: Fuzzy-Set Analysis Versus Regression Analysis.”Sociological Methods & Research33 (4): 539-573.
3.
Klir, G. A., and B. Yuan. 1995. Fuzzy Sets and Fuzzy Logic. New York: Academic Press.
4.
Pennings, P.2003. “Beyond Dichotomous Explanations: Explaining Constitutional Control of the Executive With Fuzzy-Sets.”European Journal of Political Science42 (4): 541-567.
5.
Ragin, C. C.2000. Fuzzy-Set Social Science. Chicago: University of Chicago Press.
6.
Skocpol, Theda. 1979. States and Social Revolutions. Cambridge, UK: Cambridge University Press.
7.
Smithson, Michael. 1987. Fuzzy Set Analysis for Behavioral and Social Sciences. New York: Springer-Verlag.
8.
Smithson, Michael. 2005. “Fuzzy Set Inclusion: Linking Fuzzy Set Methods With Mainstream Techniques.”Sociological Methods & Research33 (4): 431-461.
9.
Verkuilen, Jay. 2005. “Assigning Membership in a Fuzzy Set Analysis.”Sociological Methods & Research33 (4): 462-496.