KVAČEK, Zlatko; TEODORIDIS, Valisis. Tertiary macrofloras of the Bohemian Massif: a review with correlations within Boreal and Central Europe. Bulletin of Geosciences. 2007, čís. 82(4). Dostupné online.
kew.org
powo.science.kew.org
Plants of the world online [online]. Royal Botanic Gardens, Kew. Dostupné online. (anglicky)
nhm.ac.uk
HOSTS - a Database of the World's Lepidopteran Hostplants. [online]. London: Natural History Museum. Dostupné online. (anglicky)
researchgate.net
ZAMENGO, Henrique Borges et al. Nomenclatural novelties in Celtis (Cannabaceae) and a preliminary phylogeny of the genus with emphasis on the South American species. Brazilian Journal of Botany. Sep. 2020, čís. 43. Dostupné online.