1. Bae, C. H., Kim, S. B., Lee, H. Y. and Suh, M. W. (2005). A study on development of the reliability evaluation system for VVVF urban transit. Trans. Korean Society Automotive of Engineers 13,5, 7–18.
2. Ha, C. S. and Rhyu, K. S. (2003). Design and implementation of intelligent web search agent using case based reasoning. Korea Society of Computer and Information 8,1, 20–29.
3. Han, W. Y., Sohn, J. C., Ham, H. S. and Kang, J. H. (2003). A study on a system to develop rule-based applications. Korea Information Science Society 30,2, 259–262.
4. Kim, H. J., Bae, C. H., Kim, S. B., Lee, H. Y., Kim, M. H. and Suh, M. W. (2005). A study on the development of web-based expert System for urban transit. Trans. Korean Society of Automotive Engineers 13,5, 163–170.
5. Lee, H. Y., Park, K. J., Ahn, T. K., Kim, G. D., Yoon, S. K. and Lee, S. I. (2003). A study on the RAMS for maintenance CALS system for urban transit. Korean Society for Railway 6,2, 108–113.