CityAM – 4 Apr 2013 http://www.cityam.com/article/mining-shares-and-fears-over-growth-hit-UK Index
Reuters – 3 Apr 2013 http://uk.reuters.com/article/2013/04/03/uk-markets-britain-stocks-idUKBRE8710BE20130403
Il Foglio – 3 Apr 2013 http://www.ilfoglio.it/soloqui/17601