http://www.bloomberg.com/news/2014-04-14/days-of-market-calm-seen-ending-in-hedge-fund-vix-bets.html

http://www.cboeoptionshub.com/2014/04/11/10580/

http://www.bloomberg.com/news/2014-04-11/citadel-fund-said-to-quadruple-with-high-frequency-trades.html

http://uk.reuters.com/article/2014/04/10/uk-g20-banking-idUKBREA390H920140410

http://www.reuters.com/article/2014/04/10/stocks-regulator-newyork-idUSL2N0N223P20140410

http://www.bloomberg.com/news/2014-04-11/nasdaq-swings-hit-highest-since-2011-as-vix-stays-calm.html

http://www.tradersmagazine.com/news/viewpoints/high-frequency-trading-michael-lewis-whistleblower-talks-hft-112355-1.html

http://www.marketwatch.com/story/jp-morgans-fmr-commodities-chief-under-investigation-2014-04-11?siteid=yhoof2

http://www.nytimes.com/2014/04/11/business/sacrificing-sense-for-speed-in-markets.html?ref=business&_r=2

http://www.ifre.com/isda-agm-calls-for-%E2%80%9Cfat-finger%E2%80%9D-derivatives-safeguards/21140766.article

http://www.cboeoptionshub.com/2014/04/10/exciting-first-trading-day-vxst-options-cboe/

http://www.businessweek.com/news/2014-04-10/options-trader-spends-5-dot-3-million-to-bet-russell-2000-will-drop