1. Gas Purification;Kohl,1997
2. IEA, Capturing CO2, IEA Greenhouse Gas R&D Programme, 2007, www.ieagreen.org.uk
3. OPEC, World Oil Outlook 2007, Vienna, Austria, 2007. www.opec.org
4. M. Iijima, T. Takashina, A View of Oil Resources and the Mitigation of CO2 Emissions, Mitsubishi Heavy Industries, Ltd., Technical Review Vol. 41 No. 4 (Aug. 2004)
5. CO2 Capture and Storage Closing the Knowing–Doing Gap;Steeneveldt;Chemical Engineering Research and Design,2006