• Essential oil composition of Coriandrum sativum L. fruits from different countriesOrav, Anne; Arak, Elmar; Raal, AinJournal of essential oil bearing plants2011 / p. 118-123
• Essential oil content and composition in commercial Achillea millefolium L. herbs from different countriesRaal, Ain; Orav, Anne; Arak, ElmarJournal of essential oil bearing plants2012 / p. 22-31 https://www.academia.edu/56949794/Essential_Oil_Content_and_Composition_in_Commercial_Achillea_millefolium_L_Herbs_from_Different_Countries
• Essential oil content and composition in Tanacetum vulgare L. herbs growing wild in EstoniaRaal, Ain; Orav, Anne; Gretšušnikova, TatjanaJournal of essential oil bearing plants2014 / p. 670-675 : tab https://doi.org/10.1080/0972060X.2014.958554 https://www.scopus.com/sourceid/5300152528 https://www.scopus.com/record/display.uri?eid=2-s2.0-84907273546&origin=inward&txGid=bb53686512400594bcb1db7cbb8e7c0e https://jcr.clarivate.com/jcr-jp/journal-profile?journal=J%20ESSENT%20OIL%20BEAR%20PL&year=2014 https://www.webofscience.com/wos/woscc/full-record/WOS:000342312600018