1. Aggregation Functions: A Guide for Practitioners;Beliakov,2007
2. Aggregation preserving classes of fuzzy relations;Drewniak;Kybernetika,2005
3. Preservation of properties of fuzzy relations during aggregation processes;Drewniak;Kybernetika,2007
4. Preservation of t-norm and t-conorm based properties of fuzzy relations during aggregation process;Dudziak,2013
5. Fuzzy Preference Modelling and Multicriteria Decision Support;Fodor,1994