Analytic solutions of an iterative functional differential equation. - Jianguo Si; Weinian Zhang; Gwang Hui Kim (Appl. Math. Comput., 2004)

On the stability of the pexiderized trigonometric functional equation. - Gwang Hui Kim (Appl. Math. Comput., 2008)

Boundedness of approximate trigonometric functions. - Gwang Hui Kim; Young Whan Lee (Appl. Math. Lett., 2009)

Stability of some functional equations related to distance measures - I. - Gwang Hui Kim; Prasanna K. Sahoo (Appl. Math. Lett., 2011)

Stability and Superstability of Generalized (Θ, Φ)-Derivations in Non-Archimedean Algebras: Fixed Point Theorem via the Additive Cauchy Functional Equation. - Madjid Eshaghi Gordji; Mohammad Bagher Ghaemi; Gwang Hui Kim; Badrkhan Alizadeh (J. Appl. Math., 2011)

Generalized Hyers-Ulam Stability of the Second-Order Linear Differential Equations. - Abbas Javadian; Elahe Sorouri; Gwang Hui Kim; Madjid Eshaghi Gordji (J. Appl. Math., 2011)

Stability of the Pexiderized Lobacevski Equation. - Gwang Hui Kim (J. Appl. Math., 2011)

Generalized Hyers-Ulam Stability of the Additive Functional Equation. - Yang-Hi Lee; Gwang Hui Kim (Axioms, 2019)

On the Stability of the Generalized Psi Functional Equation. - Gwang Hui Kim; Themistocles M. Rassias (Axioms, 2020)