Oil-price fixing

http://en.wikipedia.org/wiki/Price_fixing
http://www.businessweek.com/news/2013-05-14/statoil-raided-by-competition-authorities-in-oil-price-probe
http://www.aljazeera.com/news/europe/2013/05/201351511926287986.html
http://www.voanews.com/content/eu-inspects-four-firms-in-oil-pricefixing-probe/1661253.html