Stöcklin & Körner (2002)
Also: Stöcklin & Körner 2002
Interactive effects of elevated CO2, P availability and legume presence on calcareous grassland: results of a glasshouse experiment
Stöcklin, J., & Körner, C. H. (1999). Interactive effects of elevated CO2, P availability and legume presence on calcareous grassland: results of a glasshouse experiment. Functional Ecology, 13(2), 200-209. Link to paper
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.