1. Directive 2009/28/EC on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC;Off. J. Eur. Union,2009
2. Directive 2010/31/EU on the energy performance of buildings;Off. J. Eur. Union,2010
3. Europe 2020. A European Strategy for Smart, Sustainable and Inclusive Growth,2010
4. Baltic Sustainable Energy Strategy,2008
5. Possibilities of ash utilisation from biomass combustion plants;Obernberger,2009