Guest guest Posted October 8, 2009 Report Share Posted October 8, 2009 http://www.sciencedirect.com/science?_ob=ArticleURL & _udi=B6T16-4VK6904-5 & _user=1\ 0 & _rdoc=1 & _fmt= & _orig=search & _sort=d & _docanchor= & view=c & _searchStrId=1040415940 & \ _rerunOrigin=google & _acct=C000050221 & _version=1 & _urlVersion=0 & _userid=10 & md5=9ac\ 5f5c979e517bbaa9f8d54e9cb4fa8 Quote Link to comment Share on other sites More sharing options...
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