1. Structure of n-uninorms;Akella;Fuzzy Sets and Systems,2007
2. Uninorms: the known classes;De Baets,1998
3. The functional equations of Frank and Alsina for uninorms and nullnorms;Calvo;Fuzzy Sets and Systems,2001
4. Fuzzy Preference Modeling and Multicriteria Decision Support;Fodor,1994
5. Structure of uninorms;Fodor;Internat. J. Uncertainty, Fuzziness Knowledge-Based Systems,1997