http://www.cnbc.com/2017/04/18/since-1990-market-gains-double-when-this-happens–and-it-just-did.html

http://www.cnbc.com/2017/04/18/a-new-method-for-predicting-volatility-tsunamis.html

http://www.cnbc.com/2017/04/18/us-markets.html?__source=yahoo%7Cfinance%7Cheadline%7Cheadline%7Cstory&par=yahoo&doc=104409485

http://www.bloomberg.com/news/articles/2017-04-17/fischer-doesn-t-see-tantrum-redux-as-fed-debates-balance-sheet-j1mlwpdl

http://www.investing.com/analysis/indicating-market-fear-keeping-perspective-on-the-surging-interest-200183318

http://www.cboe.com/blogs/options-hub/2017/04/17/earnings-week-of-4-17—4-21

http://www.bloomberg.com/view/articles/2017-04-17/trump-s-signals-on-the-fed-are-worthless

http://finance.yahoo.com/news/five-things-know-start-day-101104520.html

http://www.bloomberg.com/news/articles/2017-04-17/fischer-doesn-t-see-tantrum-redux-as-fed-debates-balance-sheet-j1mlwpdl

http://etfdailynews.com/2017/04/18/options-activity-indicates-recent-selling-may-return-again-soon/

http://tradinggods.net/trading-gods-blog/vix-daily-update-volatility-subsides-equities-return-strength/#

http://seekingalpha.com/article/4062772-market-volatility-bulletin-vix-bulls-look-continue-last-weeks-move