Yasar, S., et al. “Gas Chromatographic (GC-GC MS) Analysis of Essential Oil of Phlomis Armeniaca Willd. From Mediterranean Region in Turkey”. Asian Journal of Chemistry, vol. 22, no. 4, Mar. 2010, pp. 2887-90, https://asianpubs.org/index.php/ajchem/article/view/11491.