• Comparative analysis of the essential oil of the underground organs of Valeriana spp. from different countriesRaal, Ain; Kokitko, Valeriia; Odyntsova, Vira; Orav, Anne; Koshovyi, OlehPhyton-International Journal of Experimental Botany2024 / p. 1365 - 1382 https://doi.org/10.32604/phyton.2024.053754 https://www.scopus.com/sourceid/16555 https://www.scopus.com/pages/publications/85201550734?inward https://jcr.clarivate.com/jcr-jp/journal-profile?journal=PHYTON-INT%20J%20EXP%20BOT&year=2024 https://www.webofscience.com/wos/woscc/full-record/WOS:001264025300001
• Variation in the composition of the essential oil of commercial Valeriana officinalis L. roots from different countriesRaal, Ain; Arak, Elmar; Orav, Anne; Kailas, Tiiu; Müürisepp, Aleksander-MatiJournal of essential oil research2008 / 6, p. 524-529 https://www.researchgate.net/publication/241714499_Variation_in_the_Composition_of_the_Essential_Oil_of_Commercial_Valeriana_Officinalis_L_Roots_from_Different_Countries
• Variation in the composition of the essential oil of Valeriana officinalis L. roots from EstoniaRaal, Ain; Orav, Anne; Arak, Elmar; Kailas, Tiiu; Müürisepp, Aleksander-MatiProceedings of the Estonian Academy of Sciences. Chemistry2007 / 2, p. 67-74