Both the original paper (http://papers.ssrn.com/sol3/papers.cfm?abstract_id=933932 http://papers.ssrn.com/sol3/papers.cfm?abstract_id=933932) and the blog post

Both the original paper (http://papers.ssrn.com/sol3/papers.cfm?abstract_id=933932 http://papers.ssrn.com/sol3/papers.cfm?abstract_id=933932) and the blog post are from 2006.