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Osborne, C. P.; Beerling, D. J. «Nature's green revolution: the remarkable evolutionary rise of C4 plants». Philosophical Transactions of the Royal Society B: Biological Sciences, 361, 1465, 2006, pàg. 173–94. DOI: 10.1098/rstb.2005.1737. PMC: 1626541. PMID: 16553316.
Bond WJ, Woodward FI, Midgley GF «The global distribution of ecosystems in a world without fire». New Phytologist, 165, 2, 2005, pàg. 525–38. DOI: 10.1111/j.1469-8137.2004.01252.x. PMID: 15720663.
Osborne, C. P.; Beerling, D. J. «Nature's green revolution: the remarkable evolutionary rise of C4 plants». Philosophical Transactions of the Royal Society B: Biological Sciences, 361, 1465, 2006, pàg. 173–94. DOI: 10.1098/rstb.2005.1737. PMC: 1626541. PMID: 16553316.