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Boyce,C. Kevin. (2008-03).[0179:hgwcti2.0.co;2 «How green was Cooksonia? The importance of size in understanding the early evolution of physiology in the vascular plant lineage»]Paleobiology34(2): 179–194.doi:10.1666/0094-8373(2008)034[0179:hgwcti]2.0.co;2.ISSN0094-8373.(kontsulta data: 2020-11-28).
Osborne,Colin P;Beerling,David J. (2005-11-28).[http://dx.doi.org/10.1098/rstb.2005.1737 «Nature's green revolution: the remarkable evolutionary rise of C
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plants»]Philosophical Transactions of the Royal Society B: Biological Sciences361(1465): 173–194.doi:10.1098/rstb.2005.1737.ISSN0962-8436.(kontsulta data: 2020-11-28).