Financial Times – 19 Feb 2013 http://www.ft.com/cms/s/0/586fb0c2-7a6b-11e2-9cc2-00144feabdc0.html#axzz2LKhgQo6T
Interactive Investor – 18 Feb 2013 http://www.iii.co.uk/investment/detail?code=cotn:GKP.L&display=discussion&id=10411602&action=detail
Economy News – 18 Feb 2013 http://www.economy-news.co.uk/shares/share-price-drivers/2746-UK Index -barclays-tullow-eurasian-randgold-resources-and-fresnillo-44545435