A PSO-ANN Integrated Model of Optimizing Cut-Off Grade and Grade of Crude Ore. - Sixin Xu; Yong He 003; Kejun Zhu; Ting Liu; Yue Li (ICNC (7), 2008)

A Genetic-Neural Method of Optimizing Cut-Off Grade and Grade of Crude Ore. - Yong He 003; Sixin Xu; Kejun Zhu; Ting Liu; Yue Li (ISNN (2), 2008)

A better estimate to the contribution rate of education on economic growth in China from 1999 to 2003. - Kejun Zhu; Haixiang Guo; Fengqin Diao; Sixin Xu (Expert Syst. Appl., 2008)