Comparing Fuzzy Numbers Using Defuzzificators on OFN Shapes. - Jacek M. Czerniak; Wojciech T. Dobrosielski; Iwona Filipowicz (Theory and Applications of Ordered Fuzzy Numbers, 2017)

The Novel Shape Normalization Operator for Fuzzy Numbers in OFN Notation. - Jacek M. Czerniak; Iwona Filipowicz; Dawid Ewald (EUSFLAT/IWIFSGN (1), 2017)