Shakeri, F., V. Ghorani, S. Saadat, Z. Gholamnezhad, and M. H. Boskabady. “The Stimulatory Effects of Medicinal Plants on β2-Adrenoceptors of Tracheal Smooth Muscle”. Iranian Journal of Allergy, Asthma and Immunology, Vol. 17, no. 5, Dec. 2018, pp. 1-15, http://ijaai.tums.ac.ir/index.php/ijaai/article/view/1803.