1. Dependency structures of data base relationships;Armstrong,1974
2. Fuzzy Relational Systems: Foundations and Principles;Belohlavek,2002
3. Implications from data with fuzzy attributes;Belohlavek,2004
4. An efficient reasoning method for dependencies over similarity and ordinal data;Belohlavek,2012
5. Fuzzy closure operators with truth stressers;Belohlavek;Logic J. IGPL,2005