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Novacek, M. J.; Cleland, E. E. «The current biodiversity extinction event: scenarios for mitigation and recovery». Proceedings of the National Academy of Science, U.S.A., 98, 10, maig 2001, pàg. 5466–70. DOI: 10.1073/pnas.091093698. PMC: 33235. PMID: 11344295.
Thomas, C. D.; Cameron, A.; Green, R.E.; et al. «Extinction risk from climate change». Nature, 427, 6970, gener 2004, pàg. 145–8. DOI: 10.1038/nature02121. PMID: 14712274.
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