On functions with the Cauchy difference bounded by a functional. Part II. - Wlodzimierz Fechner (Int. J. Math. Math. Sci., 2005)

Stability of a composite functional equation related to idempotent mappings. - Wlodzimierz Fechner (J. Approx. Theory, 2011)

The modularity law in some classes of aggregation operators. - Wlodzimierz Fechner; Ewa Rak; Lemnaouar Zedam (Fuzzy Sets Syst., 2018)

A Functional Equation Stemming from a Characterization of Power-based Implications. - Michal Baczynski 001; Wlodzimierz Fechner; Sebastia Massanet (FUZZ-IEEE, 2019)

On a generalization of multiplicative Sincov's equation for fuzzy implication functions. - Michal Baczynski 001; Wlodzimierz Fechner; Sebastia Massanet (Fuzzy Sets Syst., 2022)

The Form of Fuzzy Implication Functions Satisfying a Multiplicative Sincov's Equation. - Michal Baczynski 001; Wlodzimierz Fechner; Mateusz Pieszczek; Sebastia Massanet (EUSFLAT/AGOP, 2023)

A Functional Inequality and a New Class of Probabilities in the N-Person Red-and-Black Game. - Wlodzimierz Fechner; Maria Slomian (Symmetry, 2024)

Two Characterizations of Quasiconvexity. - Wlodzimierz Fechner (J. Optim. Theory Appl., 2025)