Fuzzy set theory : applications in the social sciences /
Michael Smithson, Jay Verkuilen
- Thousand Oaks : SAGE Publications, 2006
- xi, 97 p. : ill. ; 22 cm.
- Quantitative applications in the social sciences ; no. 07-147 .
- Sage university papers series. Quantitative applications in the social sciences ; no. 07-147 .