1. J. Tollefson, US environment agency declares greenhouse gases a threat, 2009. https://www.nature.com/news/2009/090417/full/news.2009.374.html. (Accessed 5 April 2019).
2. Broad threat to humanity from cumulative climate hazards intensified by greenhouse gas emissions;Mora;Nat. Clim. Chang.,2018
3. Why Does CO2 get Most of the Attention When There are so Many Other Heat-Trapping Gases? 2017. https://www.ucsusa.org/global-warming/science-and-impacts/science/CO2-and-global-warming-faq.html. (Accessed 3 April 2019).
4. Carbon Dioxide Emissions From Power Plants Rated Worldwide, 2007. https://www.sciencedaily.com/releases/2007/11/071114163448.htm. (Accessed 7 April 2019).
5. W. Pan, J. Zheng, C. Song, Catalytic Tri-reforming of Methane Using Flue Gas from Fossil Fuel-based Power Plants, 47 (1) 2002, 262–264.