On some difficulties in the addition of trapezoidal ordered fuzzy numbers. - Anna Lyczkowska-Hanckowiak; Krzysztof Piasecki (CoRR, 2017)

Some remarks on axiomatic definition of entropy measure. - Krzysztof Piasecki (J. Intell. Fuzzy Syst., 2017)

On Application of Ordered Fuzzy Numbers in Ranking Linguistically Evaluated Negotiation Offers. - Krzysztof Piasecki; Ewa Roszkowska (Adv. Fuzzy Syst., 2018)

Revision of the Kosiński's Theory of Ordered Fuzzy Numbers. - Krzysztof Piasecki (Axioms, 2018)

On Approximation of Any Ordered Fuzzy Number by A Trapezoidal Ordered Fuzzy Number. - Krzysztof Piasecki; Anna Lyczkowska-Hanckowiak (Symmetry, 2018)

Simple Additive Weighting Method Equipped with Fuzzy Ranking of Evaluated Alternatives. - Krzysztof Piasecki; Ewa Roszkowska; Anna Lyczkowska-Hanckowiak (Symmetry, 2019)

Impact of the Orientation of the Ordered Fuzzy Assessment on the Simple Additive Weighted Method. - Krzysztof Piasecki; Ewa Roszkowska; Anna Lyczkowska-Hanckowiak (Symmetry, 2019)

Fuzzy Representation of Principal's Preferences in Inspire Negotiation Support System. - Krzysztof Piasecki; Ewa Roszkowska; Tomasz Wachowicz; Marzena Filipowicz-Chomko; Anna Lyczkowska-Hanckowiak (Entropy, 2021)

On Present Value Evaluation under the Impact of Behavioural Factors Using Oriented Fuzzy Numbers. - Krzysztof Piasecki; Anna Lyczkowska-Hanckowiak (Symmetry, 2021)

Modifications of order scales for assessing debtors. - Aleksandra Wójcicka-Wójtowicz; Krzysztof Piasecki (Oper. Res. Decis., 2022)