1. Ad hoc Study Group on Carbon Dioxide and Climate. 1979. In Carbon dioxide and climate: A scientific assessment, ed. Jule (Chair) Charney. Washington, DC: National Academy of Sciences (NAS).
2. Ahrendts, Joachim. 1980. Reference States. Energy 5(5): 667–677.
3. Allan, Richard P., C. Liu, N.G. Loeb, M.D. Palmer, M. Roberts, D. Smith, and P.-D. Vidale. 2014. Changes in global net radiation imbalance. Geophysical Research Letters 41: 5588–5597.
4. Arrhenius, Svante. 1896. On the influence of carbonic acid in the air on the temperature on the ground. Philosophical Transactions of the Royal Society 41: 237–276.
5. Azar, Christian. Makten over Klimatet (Swedish) Solving the climate challenge. Translated by Paulina Essunger, 2012 ed. Stockholm: Albert Bonniers Publishing Co., 2008, 2012.