Guest guest Posted December 9, 2008 Report Share Posted December 9, 2008 http://www.sciencedirect.com/science?_ob=ArticleURL & _udi=B6T06-4THS3PR-2 & _user=1\ 0 & _rdoc=1 & _fmt= & _orig=search & _sort=d & view=c & _acct=C000050221 & _version=1 & _urlVers\ ion=0 & _userid=10 & md5=c3dc11fb351aefceb85d67a522b6de52 Quote Link to comment Share on other sites More sharing options...
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