1. National Oceanic and Atmospheric Administration (NOAA), Carbon dioxide at NOAA’s Mauna Loa observatory reaches new milestone: tops 400ppm. , 2013 (retrieved on 4 February, 2014).
2. IPCC special report on carbon dioxide capture and storage;Metz,2005
3. International Energy Agency (IEA), Carbon capture and storage. http://iea.org/publications/freepublications/publication/ccs_g8july09.pdf>, 2009 (retrieved on 4 February, 2014).
4. Separation of CO2 from flue gas: a review;Aaron;Sep. Sci. Technol.,2005
5. Progress in carbon dioxide separation and capture: a review;Yang;J. Environ. Sci.,2008