Director of Finance online – 18 Feb 2013 http://www.dofonline.co.uk/governance/microsoft-corporation–msft-gets-it-right-with-decision-to-permanently-lock-windows-to-one-machine-021318.html
Interactive Investor – 18 Feb 2013 http://www.iii.co.uk/articles/75604/updated-gulf-keystone-petroleum-issues-legal-dispute-update
Economy News – 15 Feb 2013 http://www.economy-news.co.uk/shares/share-price-drivers/2735-anglo-american-plc-shares-boosted-by-analyst-beat-454353