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Brunsfield et al 1994. Brunsfeld, Steven J.; Soltis, Pamela S.; Soltis, Douglas E.; Gadek, Paul A.; Quinn, Christopher J.; Strenge, Darren D.; Ranker, Tom A. (April 1994). "Phylogenetic Relationships Among the Genera of Taxodiaceae and Cupressaceae: Evidence from rbcL Sequences". Systematic Botany. 19 (2): 253. doi:10.2307/2419600. JSTOR2419600.