Fuzzy stability of additive functional inequalities with the fixed point alternative. Park, Choonkil (2009) Journal of Inequalities and Applications [electronic only]
Fuzzy stability of an additive-quadratic-quartic functional equation. Park, Choonkil (2010) Journal of Inequalities and Applications [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
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 the pexiderized quadratic functional equation: A fixed point approach. Wang, Zhihua, Zhang, Wanxiong (2009) Fixed Point Theory and Applications [electronic only]