Contact Information

Jun-Min Wang
School of Mathematics and Statistics
Beijing Institute of Technology
Beijing 100081
P. R. China
Email: jmwang@bit.edu.cn


Bao-Zhu Guo
Institute of Systems Science
Academy of Mathematics and Systems Science
Academia Sinica
Beijing 100080
P.R. China
Email: bzguo@iss.ac.cn
Homepage: http://lsc.amss.ac.cn/~bzguo/