URL
http://public.eblib.com/EBLPublic/PublicView.do?ptiID=510762
http://site.ebrary.com/id/10351901
http://www.netlibrary.com/urlapi.asp?action=summary&v=1&bookid=341398
http://dx.doi.org/10.1007/978-3-642-00518-3
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