Composition of the essential oil of Levisticum officinale W.D.J. Koch from some European countriesRaal, Ain; Arak, Elmar; Orav, Anne; Kailas, Tiiu; Müürisepp, Aleksander-MatiJournal of essential oil research2008 / p. 318-322 https://www.researchgate.net/publication/254247369_Composition_of_the_Essential_Oil_of_Levisticum_officinale_WDJ_Koch_from_Some_European_Countries