Ozkan, Yakup, et al. “Effect of Indole Butyric Acid Concentrations on Rooting of Green and Soft Wood Cuttings of Mahaleb SL-64”. Asian Journal of Chemistry, vol. 17, no. 1, Mar. 2016, pp. 301-9, https://asianpubs.org/index.php/ajchem/article/view/19766.