Harris, Daniel C. (2010). »Charles David Keeling and the Story of Atmospheric CO2 Measurements«. Analytical Chemistry. 82 (19): 7865–7870. doi:10.1021/ac1001492. ISSN0003-2700. PMID20536268.
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Keeling, Charles D.; Bacastow, Robert B.; Bainbridge, Arnold E.; Ekdahl Jr., Carl A.; Guenther, Peter R.; Waterman, Lee S.; Chin, John F. S. (1976). »Atmospheric carbon dioxide variations at Mauna Loa Observatory, Hawaii«. Tellus (v angleščini). 28 (6): 538–551. doi:10.3402/tellusa.v28i6.11322. ISSN0040-2826.
Neftel, A.; Moor, E.; Oeschger, H.; Stauffer, B. (1985). »Evidence from polar ice cores for the increase in atmospheric CO2 in the past two centuries«. Nature. 315 (6014): 45–47. Bibcode:1985Natur.315...45N. doi:10.1038/315045a0.
Pales, Jack C.; Keeling, Charles David (1965). »The Concentration of Atmospheric Carbon Dioxide in Hawaii«. Journal of Geophysical Research. 70 (24): 6053–6076. Bibcode:1965JGR....70.6053P. doi:10.1029/JZ070i024p06053.
Neftel, A.; Moor, E.; Oeschger, H.; Stauffer, B. (1985). »Evidence from polar ice cores for the increase in atmospheric CO2 in the past two centuries«. Nature. 315 (6014): 45–47. Bibcode:1985Natur.315...45N. doi:10.1038/315045a0.
Harris, Daniel C. (2010). »Charles David Keeling and the Story of Atmospheric CO2 Measurements«. Analytical Chemistry. 82 (19): 7865–7870. doi:10.1021/ac1001492. ISSN0003-2700. PMID20536268.
Harris, Daniel C. (2010). »Charles David Keeling and the Story of Atmospheric CO2 Measurements«. Analytical Chemistry. 82 (19): 7865–7870. doi:10.1021/ac1001492. ISSN0003-2700. PMID20536268.
Keeling, Charles D.; Bacastow, Robert B.; Bainbridge, Arnold E.; Ekdahl Jr., Carl A.; Guenther, Peter R.; Waterman, Lee S.; Chin, John F. S. (1976). »Atmospheric carbon dioxide variations at Mauna Loa Observatory, Hawaii«. Tellus (v angleščini). 28 (6): 538–551. doi:10.3402/tellusa.v28i6.11322. ISSN0040-2826.