Remarks on stability of linear recurrence of higher order. - Janusz Brzdek; Dorian Popa; Bing Xu (Appl. Math. Lett., 2010)

Note on nonstability of the linear functional equation of higher order. - Janusz Brzdek; Dorian Popa; Bing Xu (Comput. Math. Appl., 2011)

Remarks on the Hyers-Ulam stability of some systems of functional equations. - Janusz Brzdek; Krzysztof Cieplinski (Appl. Math. Comput., 2012)

Remarks on stability and non-stability of the linear functional equation of the first order. - Janusz Brzdek; Dorian Popa; Bing Xu (Appl. Math. Comput., 2014)

Stability for a family of equations generalizing the equation of p-Wright affine functions. - Janusz Brzdek; Liviu Cadariu (Appl. Math. Comput., 2016)

On approximate solutions of some delayed fractional differential equations. - Janusz Brzdek; Nasrin Eghbali (Appl. Math. Lett., 2016)

On the Continuous Cancellative Semigroups on a Real Interval and on a Circle and Some Symmetry Issues. - Mariusz Bajger; Janusz Brzdek; El-Sayed El-Hady; Eliza Jablonska (Symmetry, 2020)

Applications of Banach Limit in Ulam Stability. - Roman Badora; Janusz Brzdek; Krzysztof Cieplinski (Symmetry, 2021)

On Ulam Stability of Functional Equations in 2-Normed Spaces - A Survey. - Anna Bahyrycz; Janusz Brzdek; El-Sayed El-Hady; Zbigniew Lesniak (Symmetry, 2021)

On the Stability of a Generalized Fréchet Functional Equation with Respect to Hyperplanes in the Parameter Space. - Janusz Brzdek; Zbigniew Lesniak; Renata Malejki (Symmetry, 2021)

On Solutions and Stability of Stochastic Functional Equations Emerging in Psychological Theory of Learning. - Ali Turab; Janusz Brzdek; Wajahat Ali (Axioms, 2022)

On Ulam Stability of Functional Equations in 2-Normed Spaces - A Survey II. - El-Sayed El-Hady; Janusz Brzdek (Symmetry, 2022)

Ulam Stability of a General Linear Functional Equation in Modular Spaces. - Issam Aboutaib; Chaimaa Benzarouala; Janusz Brzdek; Zbigniew Lesniak; Lahbib Oubbi (Symmetry, 2022)

On Ulam Stability with Respect to 2-Norm. - Janusz Brzdek (Symmetry, 2023)

Remarks on Approximate Solutions to Difference Equations in Various Spaces. - Janusz Brzdek (Symmetry, 2023)