http://online.wsj.com/article/BT-CO-20130514-709393.html?mod=googlenews_wsj

http://www.tradersmagazine.com/news/NYSE-ARCA-wait-and-see-on-jumbo-options-111195-1.html

http://www.foxbusiness.com/news/2013/05/13/nyse-keeps-options-open-to-exit-euronext/

http://money.msn.com/business-news/article.aspx?feed=OBR&date=20130513&id=16471484

http://online.barrons.com/article/SB50001424052748704551504578480970530063986.html?ru=yahoo&mod=yahoobarrons

http://www.iii.co.uk/news-opinion/reuters/news/92208

http://finance.yahoo.com/news/justices-stay-stock-market-indexes-134319225.html

http://www.nasdaq.com/article/supreme-court-denies-ise-appeal-on-index-options-dispute-20130513-00588

http://www.tabbforum.com/news/jumbo-spy-options-make-debut-but-liquidity-a-concern-to-some

http://www.tradersmagazine.com/news/rule-on-frontrunning-blocks-delayed-finra-111189-1.html

http://investorplace.com/2013/05/low-volatility-is-depressing-options-sellers/

http://zolmax.com/oil-options-volatility-increases-for-second-straight-day/64868/