@InProceedings{KLK06, author={K.~C.~Kang and J.~Lee and B.~Kim and M.~Kim and C.~Seo and S.~Yu}, title="Re-engineering a Credit Card Authorization System forMaintainability and Re-usability of Components: a Case Study", booktitle="International Conference on Software Reuse (ICSR)", series={LNCS}, volume={4039}, pages="156--169", year=2006, month="June 12-15", address="Turin, Italy" }