W. Chen, Q. Yang, L. Zhu, and B. Wen. ICICTA '09: Proceedings of the 2009 Second International Conference on Intelligent Computation Technology and Automation, page 764--767. Washington, DC, USA, IEEE Computer Society, (2009)
P. Lin, and J. Chen. Information Sciences, 177 (5):
1193--1203(1 March 2007)Including: The 3rd International Workshop on
Computational Intelligence in Economics and Finance
(CIEF'2003).