1. International Energy Agency (IEA). Natural Gas Information Overview 2017. www.iea.org.
2. International Energy Agency (IEA). Resources to Reserves 2013. www.iea.org.
3. Worldwide development potential for sour gas;Burgers;Energy Procedia,2011
4. W. Echt, Hybrid Systems: Combining Technologies Leads to More Efficient Gas Conditioning, in: Laurance Reid Gas conditioning Conference, 2002.
5. Natural gas processing with membranes: an overview;Baker;Ind. Eng. Chem. Res.,2008