1. GDP growth (annual %)—Turkey's Annual percentage growth rate of GDP at market prices based on constant local currency The World Bank; 2012.
2. The degree-day method to estimate the residential heating natural gas consumption in Turkey: a case study;Sarak;Energy,2003
3. Annual Development of Turkey's Electricity Generation by Primary Energy Resources (1975–2011). Turkish Electricity Generation—Transmission Statistics. Ankara: Turkish Electricity Transmission Company; 2012.
4. Annual Development of Turkey's Gross Electricity Generation by Share of Primary Energy Resources (1970–2011). Turkish Electricity Generation–Transmission Statistics. Ankara: Turkish Electricity Transmission Company; 2012.
5. Forecasting of daily natural gas consumption on regional basis in Turkey using various computational methods;Taspinar;Energy and Buildings,2013