R,S,S, Feed

I didnt know how to link it
so I'm posting the links onto this post

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TD1-4VP5703-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1405c8aee17a3cc99b2db3f43dddfbef

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TD1-4VNKBW2-2&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=ccb2d1df0c8544cc7ee775b0be18a8e6

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TD1-4VNKBW2-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=5a9f52a28fda1ae52d926472a0a705de