http://www.businessweek.com/printer/articles/122900-how-the-robots-lost-high-frequency-tradings-rise-and-fall http://www.businessweek.com/printer/articles/12290

http://www.businessweek.com/printer/articles/122900-how-the-robots-lost-high-frequency-tradings-rise-and-fall http://www.businessweek.com/printer/articles/122900-how-the-... - one page version.