1. The robust Bayesian viewpoint;Berger,1984
2. Fuzzy Sets and Systems. Theory and Applications;Dubois,1980
3. On statistical inference for fuzzy data with applications to descriptive statistics;Frühwirth-Schnatter;Fuzzy Sets and Systems,1992
4. Statistics with Vague Data;Kruse,1987
5. Linear dynamic systems and fuzzy data;Schnatter,1990