1. Act of 17 December 2004 No. 99 relating to greenhouse gas emission allowance trading and the duty to surrender emission allowances. Norwegian law on emissions trading, Ministry of the Environment, Norway; 2004.
2. Regulation of 23 December 2004 No. 1851 relating to greenhouse gas emission allowance trading and the duty to surrender emission allowances. Norwegian regulation on emissions trading, Ministry of the Environment, Norway; 2004.
3. Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 establishing a scheme for greenhouse gas emission allowance trading within the community and amending council directive 96/61/EC. European Commission; 2003.
4. CEN/TS 15440:2006, Solid recovered fuels – method for the determination of biomass content. Technical Specification, CEN; 2006.
5. Draft prEN 15440, Solid recovered fuels – METHOD for the determination of biomass content. European Standard, CEN; 2009.