On a Cauchy-Jensen functional inequality. Najati, Abbas; Lee, Jung-Rye; Park, Choonkil — 2010 Bulletin of the Malaysian Mathematical Sciences Society. Second Series
A fixed point approach to the stability of an additive-quadratic-cubic-quartic functional equation. Lee, Jung Rye; Kim, Ji-Hye; Park, Choonkil — 2010 Fixed Point Theory and Applications [electronic only]
On the stability of quadratic functional equations. Lee, Jung Rye; An, Jong Su; Park, Choonkil — 2008 Abstract and Applied Analysis
On the stability of generalized additive functional inequalities in Banach spaces. Lee, Jung Rye; Park, Choonkil; Shin, Dong Yun — 2008 Journal of Inequalities and Applications [electronic only]
Homomorphisms and derivations in C * -ternary algebras. Najati, Abbas; Park, Choonkil; Lee, Jung Rye — 2009 Abstract and Applied Analysis
Fuzzy stability of quadratic functional equations. Lee, Jung Rye; Jang, Sun-Young; Park, Choonkil; Shin, Dong Yun — 2010 Advances in Difference Equations [electronic only]
Fuzzy stability of Jensen-type quadratic functional equations. Jang, Sun-Young; Lee, Jung Rye; Park, Choonkil; Shin, Dong Yun — 2009 Abstract and Applied Analysis