Svensmark (1998)
Also: Svensmark 1998
Influence of Cosmic Rays on Earth's Climate
Svensmark, H. (1998). Influence of Cosmic Rays on Earth's Climate. Physical Review Letters. 81(22),5027-5030. PDF
https://doi.org/10.1103/physrevlett.81.5027
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.