1. L. Bernstein, P. Bosch, O. Canziani, Z. Chen, R. Christ, K. Riahi, IPCC, 2007: climate change 2007: synthesis report, IPCC, 2008.
2. IPCC, The physical science basis. Contribution of working group I to the fifth assessment report of the intergovernmental panel on climate change, in: T.F. Stocker, D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (Eds.), Cambridge University Press, Cambridge, United Kingdom and New York, NY, pp. 1-1535, 2013.
3. The Keeling Curve, https://www.co2.earth/, June, 2017.
4. UN Climate Change Paris Agreement, 2016. http://newsroom.unfccc.int/paris-agreement/175-states-sign-paris-agreement/.
5. CO2 capture for refineries, a practical approach;van Straelen;Int. J. Greenhouse Gas Control,2010