On a System of Schröder Equations on the Circle. - Krzysztof Cieplinski; Marek Cezary Zdun (Int. J. Bifurc. Chaos, 2003)

Generalized stability of multi-additive mappings. - Krzysztof Cieplinski (Appl. Math. Lett., 2010)

On conditions guaranteeing that mappings are elements of iteration groups. - Krzysztof Cieplinski (Appl. Math. Lett., 2011)

On the generalized Hyers-Ulam stability of multi-quadratic mappings. - Krzysztof Cieplinski (Comput. Math. Appl., 2011)

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

On an equation characterizing multi-additive-quadratic mappings and its Hyers-Ulam stability. - Anna Bahyrycz; Krzysztof Cieplinski; Jolanta Olko (Appl. Math. Comput., 2015)

Ulam Stability of a Functional Equation in Various Normed Spaces. - Krzysztof Cieplinski (Symmetry, 2020)

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