http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V09-48NC790-1&_user=5610621&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=991365708&_rerunOrigin=google&_acct=C000067884&_version=1&_urlVersion=0&_userid=5610621&md5=fe5579e9b6c274870598276f2367eb06
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V09-48NC790-1&_user=5610621&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=991365708&_rerunOrigin=google&_acct=C000067884&_version=1&_urlVersion=0&_userid=5610621&md5=fe5579e9b6c274870598276f2367eb06
ReplyDelete