Proceedings of Asia Pacific Industrial Engineering and Management Systems Conference, 2009-08-27
The KOREA-CHINA Quality Symposium, 2009-08-27
INFORMS Annual Meeting, 2008-10-12
The 8th International Conference on Operations and Quantitative Management, 2007-10-17
Proceedings of the Joint Conference of Korean Institute of Industrial Engineers and Korean Operations Research and Management Science Society, 2008-05-16
The Joint Conference of Korean Institute of Industrial Engineers and Korean Operations Research and Management Science Society, 2008-05-16
INFORMS Annual Meeting, 2007-11-04
IE INTERFACES, vol. 16, no. 특별호, page. 144 - 148, 2003-01