Keith, David W., Geoffrey Holmes, David St Angelo, and Kenton Heidel. 2018. “A Process for Capturing CO2 from the Atmosphere.” Joule 2 (8): 1573–94. https://doi.org/10.1016/j.joule.2018.05.006.

“The Impact of Direct Air Carbon Capture on Climate Change.” n.d. Accessed November 23, 2019. http://cognitivemedium.com/dac-notes.