1. Resources to Reserves 2013; Oil, Gas and Coal Technologies for the Energy Markets of the Future;IEA,2013
2. Directive 2009/28/EC of the European Parliament and of the Council; on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC;EC;Official Journal of the European Union,2009
3. A Policy Framework for Climate and Energy in the Period from 2020 to 2030;EC,2014
4. Transformation of Europe's Power System until 2050; Including Specific Considerations for Germany;Feldhaus,2010