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There seem to be some equations missing from this article. ex. "This utility function has the representation ." 130.15.230.92 (talk) 02:42, 30 October 2012 (UTC)
Broken link edit
Reference 1 to the notes at Harvard Kennedy School seems to be broken. — Preceding unsigned comment added by 138.246.2.42 (talk) 08:53, 24 March 2014 (UTC)
- I added the closest archive I found (one of three at archive.org) —PC-XT+ 01:22, 28 March 2014 (UTC)