Schurer et al. (2014)
Also: Schurer et al. 2014, Schurer 2014
Small influence of solar variability on climate over the past millennium
Schurer, A. P., Tett, S. F., & Hegerl, G. C. (2014). Small influence of solar variability on climate over the past millennium. Nature Geoscience, 7(2), 104-108. Link to paper
doi:10.1038/ngeo2040
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.