Aggregations preserving classes of fuzzy relations. - Józef Drewniak; Urszula Dudziak (Kybernetika, 2005)

Preservation of Graded Properties of Fuzzy Relations by Aggregation Functions. - Urszula Dudziak (EUSFLAT Conf. (2), 2007)

Preservation of properties of fuzzy relations during aggregation processes. - Józef Drewniak; Urszula Dudziak (Kybernetika, 2007)

Weak and graded properties of fuzzy relations in the context of aggregation process. - Urszula Dudziak (Fuzzy Sets Syst., 2010)

Equivalent bipolar fuzzy relations. - Urszula Dudziak; Barbara Pekala (Fuzzy Sets Syst., 2010)

Intuitionistic fuzzy preference relations. - Urszula Dudziak; Barbara Pekala (EUSFLAT Conf., 2011)

Preservation of t-norm and t-conorm based properties of fuzzy relations during aggregation process. - Urszula Dudziak (EUSFLAT Conf., 2013)