Part 1http://www.youtube.com/watch?v=2ssrcD5GdPQ&feature=relatedPart 2http://www.youtube.com/watch?v=ImuVUab6WW0&feature=relatedPart 3http://www.youtube.com/watch?feature=player_embedded&v=8Qsll_5-FXcHis website with all kinds of links of research you can do.http://www.marketskeptics.com/2011/06/the-esf-and-its-history.html