1. U.S. Environmental Protection
Agency, Inventory of U.S. Greenhouse
Gas Emissions and Sinks 1990–2018, 2020.
2. Environment and Climate Change
Canada—Greenhouse Gas Division, National Inventory Report 1990–2018: Greenhouse Gas Sources
and Sinks in Canada, 2020.
3. Advancing knowledge of gas migration and fugitive gas from energy wells in northeast British Columbia, Canada
4. Myhre, G.; Shindell, D.; Breon, F.M.; Collins, W.; Fuglestvedt, J.; Huang, J.; Koch, D.; Lamarque, J.F.; Lee, D.; Mendoza, B.; Nakajima, T.; Robock, A.; Stephens, G.; Takemura, T.; Zhang, H. In Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change; Stocker, T., Qin, D., Plattner, G.K., Tignor, M., Allen, S., Boschung, J., Nauels, A., Xia, Y., Bex, V., Midgley, P., Eds. Cambridge University Press: Cambridge, United Kingdom and New York, NY, USA, 2013; Chapter 8, pp 659–740.
5. Direct measurements of methane emissions from abandoned oil and gas wells in Pennsylvania