Author: Tan Zhiqiang article taken from: open systems world - SEOUL September 25, 2002
Http://network.ccidnet.com/pub/disp/Article?columnid=295&articleid=26191&pageno=1
http://network.ccidnet.com/pub/disp/Article?columnid=295&articleid=26191&article =2
http://blog.9cbs.net/chensheng913/archive/2004/09/03/93936.aspx
