Glebionis im Germplasm Resources Information Network (GRIN), USDA, ARS, National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Abgerufen am 18. Februar 2019.
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Torbjørn Alm, Plant species introduced by foreigners according to folk tradition in Norway and some other European countries: xenophobic tales or not? Journal of Ethnobiology and Ethnomedicine 11, 2015, 9. DOI:10.1186/s13002-015-0056-9
