1. Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009 on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC
2. A review on biomass as a fuel for boilers;Saidur;Renew Sust Energ Rev,2011
3. Best practice guide: wood burning technologies for irish consumers;SEAI,2012
4. Review of sustainable biomass pellets production – A study for agricultural residues pellets’ market in Greece;Karkania;Renew Sust Energ Rev,2012
5. Liddell, C. (2011) Hard to treat homes in Northern Ireland: evaluation report. Northern Ireland Electricity and the Department for Social Development.