Sawyer (1972)
Also: Sawyer 1972
Man-made carbon dioxide and the greenhouse effect
Sawyer, J. S. (1972). Man-made carbon dioxide and the greenhouse effect. Nature, 239(5366), 2. Link to PDF
DOI: 10.1038/239023a0
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.