http://spaces.msn.com/yanzhouxu/

math story:

http://episte.math.ntu.edu.tw/cgi/mathfield.pl?fld=peo

http://61.187.187.252/bdsyj/Article/ArticleShow.asp?ArticleID=153

http://61.187.187.252/bdsyj/Article/ArticleShow.asp?ArticleID=12