Holechek et al. (2000)
Also: Holechek et al. 2000
Short-duration grazing: the facts in 1999
Holechek, J. L., Gomes, H., Molinar, F., Galt, D., & Valdez, R. (2000). Short-duration grazing: the facts in 1999. Rangelands, 22(1), 18-22. Link to PDF
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.