http://www.bloomberg.com/news/articles/2015-08-25/japan-stocks-plunge-for-second-day-after-u-s-enters-correction

http://www.institutionalinvestor.com/article/3482470/asset-management-equities/black-monday-no-surprise-say-analysts.html#.Vdxjkpcm8yo

http://www.chicagotribune.com/news/sns-wp-blm-news-bc-markets-panic24-20150824-story.html

http://www.wsj.com/articles/historic-profits-for-high-frequency-trading-firm-today-1440446251

http://www.cboeoptionshub.com/2015/08/24/record-volume-day-for-cboe-and-spx-options-as-vix-index-has-its-biggest-one-week-jump/

http://www.reuters.com/article/2015/08/24/us-markets-stocks-usa-idUSKCN0QT10W20150824

http://www.marketwatch.com/story/vix-fear-index-skyrockets-to-highest-level-in-nearly-7-years-2015-08-24

http://www.bloomberg.com/news/articles/2015-08-24/vix-didn-t-update-for-30-minutes-as-options-quotes-got-erratic

http://blogs.barrons.com/focusonfunds/2015/08/24/volatility-short-circuits-vix/

http://blogs.barrons.com/stockstowatchtoday/2015/08/24/options-market-on-fire/

http://www.futuresmag.com/2015/08/23/asian-markets-plummet-sps-follow#.VdscL0e43LE.twitter

http://www.bloomberg.com/news/articles/2015-08-23/after-months-in-denial-vix-hears-signals-sent-by-other-markets