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jstor.org
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Shear, William A.; Edgecombe, Gregory D. (2010). «The geological record and phylogeny of the Myriapoda». Arthropod Structure & Development39 (2–3): 174-190. PMID19944188. doi:10.1016/j.asd.2009.11.002.
Sierwald, Petra; Bond, Jason E. (2007). «Current status of the myriapod class Diplopoda (Millipedes): Taxonomic diversity and phylogeny». Annual Review of Entomology52 (1): 401-420. PMID17163800. doi:10.1146/annurev.ento.52.111805.090210.