http://www.investorguide.com/article/11178/helpful-call-options-strategies-for-retail-investors/

http://www.investorguide.com/article/11176/what-determines-the-price-of-a-stock-option/

http://www.investorguide.com/article/11179/when-used-wisely-derivatives-are-useful-tools-for-investors/

http://www.marketoracle.co.uk/Article37054.html

http://www.reuters.com/article/2012/10/17/us-cftc-cme-natgas-limits-idUSBRE89G1ZZ20121017

http://www.bloomberg.com/news/2012-10-17/cboe-will-consider-asian-hub-if-london-center-succeeds.html

http://wallstreetsectorselector.com/2012/10/vix-cant-break-15/

http://online.barrons.com/article/SB50001424053111904034104578062432855674320.html?mod=BOL_options_home

https://theoptionsinsider.com/unusualactivity/?p=100001972&qcABC=1

http://www.businessweek.com/ap/2012-10-17/sec-proposes-capital-rules-for-derivatives-traders

http://www.reuters.com/article/2012/10/17/exchanges-cme-kcbt-bidders-idUSL1E8LH7GG20121017