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

http://blogs.wsj.com/moneybeat/2015/08/21/fear-flashes-in-options-market-vix-nearly-doubles/

http://www.chicagotribune.com/news/sns-wp-blm-news-bc-markets21-20150821-story.html

http://www.chicagotribune.com/news/sns-wp-blm-news-bc-markets-global21-20150821-story.html

http://www.bloomberg.com/news/articles/2015-08-24/panic-grips-markets-as-traders-tally-losses-from-global-selloff

http://www.reuters.com/article/2015/08/21/cboe-volume-record-idUSL1N10W2MJ20150821