Mappings which preserve regular dodecahedrons. Kim, Byungbae — 2006 International Journal of Mathematics and Mathematical Sciences
Local stability of the additive functional equation and its applications. Jung, Soon-Mo; Kim, Byungbae — 2003 International Journal of Mathematics and Mathematical Sciences
Mappings preserving regular hexahedrons. Jung, Soon-Mo; Kim, Byungbae — 2005 International Journal of Mathematics and Mathematical Sciences
Bessel's differential equation and its Hyers-Ulam stability. Kim, Byungbae; Jung, Soon-Mo — 2007 Journal of Inequalities and Applications [electronic only]
Unit-circle-preserving mappings. Jung, Soon-Mo; Kim, Byungbae — 2004 International Journal of Mathematics and Mathematical Sciences