Stability of approximate quadratic mappings. Kim, Hark-Mahn; Kim, Minyoung; Lee, Juri — 2010 Journal of Inequalities and Applications [electronic only]
Stability of quadratic functional equations via the fixed point and direct method. Son, Eunyoung; Lee, Juri; Kim, Hark-Mahn — 2010 Journal of Inequalities and Applications [electronic only]
On the stability of a new Pexider-type functional equation. Jun, Kil-Woung; Lee, Yang-Hi; Lee, Juri — 2008 Journal of Inequalities and Applications [electronic only]