http://210.75.240.142/m/user_content.aspx?id=353626
仅仅是传说，因为我现在没有权限登陆
http://www.sciencedirect.com/science?_ob=PublicationURL&_cdi=43716&_pubType=J&_acct=C000061434&_version=1&_urlVersion=0&_userid=3808521&md5=643b11e9341f8188367aeadc0ef8d507&jchunk=3#3
