Email:
gansb@math.pku.edu.cn (Prof. Shaobo Gan) or
sunwx@math.pku.edu.cn (Prof. Wenxiang Sun)
Fax: 0086 -10 - 62751801
Mailling Address:
Professor Shaobo Gan or Professor Wenxiang Sun School of Mathematical Sciences Peking University Beijing 100871 P.R. China
