Keser, Serhat, et al. “Determination of Antioxidant Capacities of Phlomis Pungens Willd. Var. Hispida Hub.-Mor”. Asian Journal of Chemistry, vol. 24, no. 6, Feb. 2012, pp. 2780-4, https://asianpubs.org/index.php/ajchem/article/view/9224.