References
- OECD, "OECD Environmental Performance Review: Turkey", 13-14, 18-19, 58-70 (2008)
- Ministry of Environmental and Forestry, "EU Integrated Environmental Approximation Strategy(2007-2023)", 11-20 (2006)
- Frost & Sullivan, "Central and Eastern European Industrial Water and Wastewater Treatment Markets", Ch.5, 1-9 (2008)