2011 IEEE 18th International Conference on Industrial Engineering and Engineering Management Industrial Engineering and Engineering Management (IE&EM), 2011 IEEE 18Th International Conference on. Part 3:1887-1890 Sep, 2011
2010 IEEE 17Th International Conference on Industrial Engineering and Engineering Management Industrial Engineering and Engineering Management (IE&EM), 2010 IEEE 17Th International Conference on. :454-457 Oct, 2010