`Discrete Dynamics in Nature and SocietyVolume 2012, Article ID 835893, 12 pageshttp://dx.doi.org/10.1155/2012/835893`
Research Article

## Stability of a Bi-Additive Functional Equation in Banach Modules Over a -Algebra

1Department of Mathematics Education, College of Education, Mokwon University, Daejeon 302-729, Republic of Korea
2Graduate School of Education, Kyung Hee University, Yongin 446-701, Republic of Korea

Received 6 April 2012; Accepted 30 May 2012

Copyright © 2012 Won-Gil Park and Jae-Hyeong Bae. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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