1. Oil shale fuel combustion;Ots,2006
2. Greenhouse gas emissions in Estonia 1990–2007, National inventory report to the UNFCCC secretariat, 2009. Available at: http://www.keskkonnainfo.ee/index.php?lan=EE&sid=336&tid=316&l3=334&l2=322&l1=320. Accessed 3 Sep 2009.
3. Estonian oil shale power plants' ash handling problems;Arro;Energy and Sustainability, WIT Transactions on Ecology and the Environment,2007
4. Experience of Estonian oil shale combustion based on CFB technology at Narva Power Plants;Hotta;Oil Shale,2005
5. Carbon dioxide binding in the heterogeneous systems formed by combustion of oil shale: 3. Transformations in the system suspension of ash — flue gases;Kuusik;Oil Shale,2002