http://www.reuters.com/article/2014/02/20/us-usa-fed-yellen-idUSBREA1J1J820140220

http://online.wsj.com/news/articles/SB10001424052702304275304579395601716404662?mod=dist_smartbrief

http://uk.reuters.com/article/2014/02/20/businesswire-highfrequency-idUKL2N0LP2S720140220

http://blogs.wsj.com/moneybeat/2014/02/20/bullish-options-activity-on-facebook-surges-after-deal/

https://theoptionsinsider.com/education/?p=100031330&qcABC=1

http://thetradenews.com/news/Asset_Classes/Derivatives/Tech_providers_target_derivatives_for_growth_in_2014.aspx

http://www.futuresmag.com/2014/02/20/commodities-take-lead-as-sp-sits-at-critical-level#.UwY6KeUKvqE.twitter

http://www.bloomberg.com/news/2014-02-20/declawing-speed-traders-is-goal-of-stock-market-revamp-proposal.html

http://www.reuters.com/article/2014/02/20/australia-apx-idUSL3N0LO0TV20140220

http://www.reuters.com/article/2014/02/20/deutscheboerse-mergers-idUSL6N0LP27S20140220

http://www.forbes.com/sites/erikakelton/2014/02/19/cftc-enforcement-efforts-will-get-a-boost-in-2014/

http://www.bloomberg.com/news/2014-02-19/financial-regulators-are-still-flying-blind.html