Dereboylu, A.E., et al. “Glandular Trichomes Morphology, Chemical Composition and Antimicrobial Activity of the Essential Oil of Three Endemic Scutellaria Taxa (Lamiaceae)”. Asian Journal of Chemistry, vol. 24, no. 11, June 2012, pp. 4911-6, https://asianpubs.org/index.php/ajchem/article/view/9794.