Kahrizi, Danial, and Mehdi Kakaei. “Effect of 6-Benzylaminopurine, 2,4-Dichlorophenoxyacetic Acid and Indole-3-Butyric Acid on Micropropagation Stages of Achillea Biebersteinii”. Asian Journal of Chemistry, vol. 22, no. 3, Mar. 2010, pp. 2383-6, https://asianpubs.org/index.php/ajchem/article/view/11411.