http://seekingalpha.com/article/924561-how-to-play-google-options-post-earnings

https://theoptionsinsider.com/unusualactivity/?p=100001760&qcABC=1

http://www.thetradenews.com/newsarticle.aspx?id=9841

http://online.barrons.com/article/SB50001424053111903463204578044523137995526.html?mod=BOL_columnist_latest_col_art

http://www.businessweek.com/articles/2012-10-15/dodd-frank-not-such-a-drag-after-all

http://www.nytimes.com/2012/10/15/opinion/the-speculators-win-a-round.html

http://online.barrons.com/article/SB50001424053111903463204578044510029675872.html?mod=googlenews_barrons

http://www.nytimes.com/2012/10/15/business/with-profits-dropping-high-speed-trading-cools-down.html?pagewanted=all&_r=0

http://www.nasdaq.com/article/cme-group-submits-application-for-european-exchange-20121012-00538#.UHwS7lHUmHg

http://www.chicagobusiness.com/article/20121013/ISSUE01/310139980/why-hedge-fund-operator-citadel-is-becoming-a-stockbroker

http://www.chicagotribune.com/business/ct-biz-1012-airfare-options-20121011,0,5683311,full.story

http://www.reuters.com/article/2012/10/12/us-cme-swaps-idUSBRE89B15X20121012