Ying Wang Jianzhong Zhou Youlin Lu Hui Qin Yongchuan Zhang Chaos Cultural Particle Swarm Optimization and Its Application. 30-40 2009 ISNN (3) http://dx.doi.org/10.1007/978-3-642-01513-7_4 conf/isnn/2009-3 db/conf/isnn/isnn2009-3.html#WangZLQZ09