1. COWI Consulting Engineers and Planners AS. 2000. “Cleaner production assessment in fish processing”. Paris: United Nations Environment Programme.
2. World Bank. 2009. “World Development Indicators Database”. Washington DC: World Bank.
3. Hayes, T. and Arthur, D.Overview of Emerging Produced Water Treatment Technologies. The 11th Annual International Petroleum Environmental Conference, IPEC Committee. Albuquerque, NM.
4. Kaul, S.N., Nandy, T., Szpyrkowicz, L., Gautam, A. and Khanna, D.R. 2005. “Wastewater management: With special reference to tanneries”. 12–32. New Delhi, India: Discovery Publishing House.
5. Brine disposal from reverse osmosis desalination plants in Oman and the United Arab Emirates