Aberoomand Azar, Parviz, Karim Zare, Mohammad Saber-Tehrani, Azizolah Jafari Kokhedan, Azam Vafaei, and Mehdi Nekoei. 2013. “Chemical Composition of Essential Oil of Stachys Pilifera Benth by Hydrodistillation, Head Space-Solid Phase Microextraction and Solvent Free Microwave Extraction Methods and QSRR Evaluation”. Asian Journal of Chemistry 25 (8):4242-46. https://doi.org/10.14233/ajchem.2013.13919.