1. International Energy Agency (IEA) - Renewable Energy Division. Renewables 2018. Analysis and Forecasts to 2023,2018
2. Bioenergy technologies, uses, market and future trends with Austria as a case study;Anca-Couce;Renew Sustain Energy Rev,2021
3. Commission Regulation (EU) 2015/1189 of the 28 April 2015 implementing Directive 2009/125/EC of the European Parliament and the Council with regard to ecodesign requirements for solid fuel boilers,2015
4. Commission Regulation (EU) 2015/1185 of 24 April 2015 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for solid fuel local space heaters,2015
5. Directive (EU) 2015/2193 of the European Parliament and of the Council of 25 November 2015 on the limitation of emissions of certain pollutants into the air from medium combustion plants,2015