Chemical investigation of the essential oil from berries and needles of common juniper (Juniperus communis L.) growing wild in EstoniaOrav, Anne; Kailas, Tiiu; Müürisepp, Aleksander-MatiNatural product research2010 / 19, p. 1789-1799

Composition of the essential oil of Salvia officinalis L. from various European countriesRaal, Ain; Orav, Anne; Arak, ElmarNatural product research2007 / 5, p. 406-411

Composition of the essential oil of the Rhododendron tomentosum Harmaja from EstoniaRaal, Ain; Orav, Anne; Gretšušnikova, TatjanaNatural product research2014 / p. 1091-1098 : tab https://doi.org/10.1080/14786419.2014.907287 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Content and composition of the essential oil of Chamomilla recutita (L.)Rauschert from some European countriesOrav, Anne; Raal, Ain; Arak, ElmarNatural product research2010 / 1, p. 48-55

Essential oil composition of Foeniculum vulgare Mill. fruits from pharmacies in different countriesRaal, Ain; Orav, Anne; Arak, ElmarNatural product research2012 / p. 1173-1178 https://www.tandfonline.com/doi/full/10.1080/14786419.2010.535154

Essential oil composition of Pimpinella anisum L. fruits from various European countriesOrav, Anne; Raal, Ain; Arak, ElmarNatural product research2008 / 3, p. 227-232 https://www.researchgate.net/publication/5586276_Essential_oil_composition_of_Pimpinella_anisum_L_fruits_from_various_European_countries

Phytochemical analysis of the essential oil of Achillea millefolium L. from various European countriesOrav, Anne; Arak, Elmar; Raal, AinNatural product research2006 / 12, p. 1082-1088

Phytochemical analysis of the essential oil of Thymus serpyllum L. growing wild in EstoniaPaaver, Urve; Orav, Anne; Arak, Elmar; Mäeorg, Uno; Raal, AinNatural product research2008 / 2, p. 108-115

Variation in the composition of the essential oils, phenolic compounds and mineral elements of Hypericum perforatum L. growing in EstoniaHelmja, Kati; Vaher, Merike; Püssa, Tõnu; Orav, Anne; Viitak, Anu; Levandi, Tuuli; Kaljurand, MihkelNatural product research2011 / p. 496-510