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Chapin III, F.S., B.H. Walker, R.J. Hobbs, D.U. Hooper, J.H. Lawton, O.E. Sala, and D. Tilman.
1997.
“Biotic control over the functioning of ecosystems. Science 277:500-504.”
Craig, T.P., J.K. Itami, J.D. Horner and W.G. Abrahamson.
1994.
“Host shifts and speciation in gall-forming insects. Pages 194-207 in P. W. Price, W. J. Mattson, and Y. N. Baranchikov, Eds., The Ecology and Evolution of Gall-forming Insects. U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. St. Paul, MN.”
Daily, G. C., T. S*derqvist, S. Aniyar, K. Arrow, P. Dasgupta, P. R. Ehrlich, C. Folke, A. Jansson, B-O. Jansson, N. Kautsky, S. Levin, J. Lubchenco, K-G. M*ler, D. Simpson, D. Starrett, D. Tilman and B. Walker.
2000.
“The value of nature and the nature of value. Science 289:395-396.”