B.-H. Wang and X.-Y. Yang, “The Application of PPC Model of RAGA on the Compositive Evaluation of Flood Disaster in Heilongjiang Province,” Journal of Guangdong Technical College of Water Resources and Electric Engineering, 2009, pp. 46-49.
 Y.-Y. He, J.-Z. Zhou, Qin Hui, L. Mo and P.-G. Kou, “Flood Disaster Classification Based on Fuzzy Clustering Iterative Model and Modified Differential Evolution Algorithm,” Proceedings of the 6th International Conference on Fuzzy Systems and Knowledge Discovery, Tianjing, 14-16 August 2009, Vol 3.
 J. V. Ast, R. Babuska and B. D. Schutter, “Particle Swarms in Optimization and Control,” Proceedings of the 17th World Congress the International Federation of Automatic Control, Seoul, Korea, 6-11 July 2008, pp. 5131-5136.
 A. Banks, J. Vincent and C. Anyakoha, “A review of Particle Swarm Optimization. Part I: Background and Development,” Natural Computing, Vol. 6, No. 4, 2007, pp. 467-484. doi:10.1007/s11047-007-9049-5
 Y.-L. Lu, J.-Z. Zhou, L.-X. Song and Y.-Y. He, “Flood Disaster Evaluating Method Based on CCPSO along with Project Pursuit Model and Its Application,” Journal of System Simulation, 2010, pp. 383-387+390.
 P. J. Angeline, “Evolutionary Optimization Versus Particle Swarm Optimization: Philosophy and Performance Difference,” Proceedings of the 7th Annual Conference on Evolutionary Programming, San Diego, California, 26-29 March 1998, pp. 601-610. doi:10.1007/BFb0040811
 B. Niu, Y.-l. Zhu, X.-X. He and H. Shen, “A Multi-Swarm Optimizer Based Fuzzy Modeling Approach for Dynamic System Processing,” Neurocomputing, Vol. 71, No.7-9, 2008, pp. 1436-1448. doi:10.1016/j.neucom.2007.05.010
 Y. Marinakis and M. Marinaki, “A Hybrid Multi-Swarm Particle Swarm Optimization Algorithm for the Probabilisitc Traveling Salesman Problem,” Computers & Operations Research, Vol. 37, No. 3, 2010, pp. 432-442. doi:10.1016/j.cor.2009.03.004