Solution and Stability of Euler-Lagrange-Rassias Quartic Functional Equations in Various Quasinormed Spaces

by Heejeong Koh, Dongseung Kang
Published 2013-01-01

Approximate Generalized Cubic *-Derivations

by Heejeong Koh, Dongseung Kang
Published 2014-01-01

Stability Problems of Quintic Mappings in Quasi-β-Normed Spaces

by In Goo Cho, Dongseung Kang, Heejeong Koh
Published 2010-01-01

Investigation of the Stability via Shadowing Property

by Sang-Hyuk Lee, Heejeong Koh, Se-Hyun Ku
Published 2009-01-01