1. Agricultural residues as a potential resource for environmentally sustainable electric power generation in Turkey;Ergüdeneler;Renewable Energy,1994
2. WECTNC 1994. Sixth Energy Congress of Turkey. World Energy Council-Turkish National Committee, İzmir. Energy Statistics, 1994
3. CIA World Factbook, 1998
4. European Commission – Directorate General for Energy (DGXVII), The SYNERGY Program Report, 1997
5. Garg HP, Datta G. Global status on renewable energy. Solar energy heating and cooling methods in buildings. International Workshop: Iran University of Science and Technology, 19–20 May, 1998