Bateman, R.M.; Dimichele, W.A. (1994). "Heterospory – the most iterative key innovation in the evolutionary history of the plant kingdom". Biological Reviews of the Cambridge Philosophical Society. 69 (3): 345–417. doi:10.1111/j.1469-185x.1994.tb01276.x. S2CID29709953.
Seguí-Simarro, José M.; Nuez, Fernando (1 September 2008). "How microspores transform into haploid embryos: changes associated with embryogenesis induction and microspore-derived embryogenesis". Physiologia Plantarum. 134 (1): 1–12. doi:10.1111/j.1399-3054.2008.01113.x. ISSN1399-3054. PMID18507790.
Seguí-Simarro, José M.; Nuez, Fernando (1 September 2008). "How microspores transform into haploid embryos: changes associated with embryogenesis induction and microspore-derived embryogenesis". Physiologia Plantarum. 134 (1): 1–12. doi:10.1111/j.1399-3054.2008.01113.x. ISSN1399-3054. PMID18507790.
Bateman, R.M.; Dimichele, W.A. (1994). "Heterospory – the most iterative key innovation in the evolutionary history of the plant kingdom". Biological Reviews of the Cambridge Philosophical Society. 69 (3): 345–417. doi:10.1111/j.1469-185x.1994.tb01276.x. S2CID29709953.
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Seguí-Simarro, José M.; Nuez, Fernando (1 September 2008). "How microspores transform into haploid embryos: changes associated with embryogenesis induction and microspore-derived embryogenesis". Physiologia Plantarum. 134 (1): 1–12. doi:10.1111/j.1399-3054.2008.01113.x. ISSN1399-3054. PMID18507790.