DILEK AZAZ, AYSE, et al. “Essential Oil Composition and Antimicrobial Activities of Achillea Biserrata M. Bieb. and Achillea Salicifolia Besser Subsp. Salicifolia Collected in Turkey”. Asian Journal of Chemistry, vol. 21, no. 4, Mar. 2010, pp. 3193-8, https://asianpubs.org/index.php/ajchem/article/view/12440.