Cutting-Edge Research Topics on Multiple Criteria Decision Making 20th International Conference, MCDM 2009, Chengdu/Jiuzhaigou, China, June 21-26, 2009. Proceedings - Shi, Yong; Wang, Shouyang; Peng, Yi; Li, Jianping; Zeng, Yong (Springer Berlin Heidelberg : Imprint: Springer, 2009)