1. The Windfall tax;Chennells;Fiscal Studies,1997
2. Commission for Energy Regulation, Treatment of emissions trading costs in the power generation sector;Commission for Energy Regulation,2004
3. Konkurrensverket vill stoppa Vattenfall, (Competition authority wants to stop Vattenfall);Dagens Industri,2004
4. Die Presse, 2004. September 20th, 2004, Germany.