Denk, T; GW Grimm (February 2005). "Phylogeny and biogeography of Zelkova (Ulmaceae sensu stricto) as inferred from leaf morphology, ITS sequence data and the fossil record". Bot J Linn Soc147 (2): 129–157. doi:10.1111/j.1095-8339.2005.00354.x.
Ueda, Kunihiko; K Kosuge; H Tobe (June 1997). "A molecular phylogeny of Celtidaceae and Ulmaceae (Urticales) based on rbcL nucleotide sequences". Journal of Plant Research110 (2): 171–178. doi:10.1007/BF02509305.
Sun M; Naeem R; Su J-X; Cao Z-Y; J. Burleigh G; Soltis PS; Soltis DE; Chen Z-D (2016). "Phylogeny of the Rosidae: A dense taxon sampling analysis". Journal of Systematics and Evolution54 (4): 363–391. doi:10.1111/jse.12211.