Mohammed, Aram Akram. “Application of Different Concentrations of Licorice and Willow Extracts As Rooting Stimulator in Hardwood Cuttings of Olive (Oleaeuropaea L.)”. International Journal of Environment, Agriculture and Biotechnology, vol. 6, no. 6, Nov. 2021, https://journal-repository.com/index.php/ijeab/article/view/4302.