Perveen, S., A.M. AL-Taweel, G.A. Fawzy, T.A. Ibrahim, A. Malik, and A. Khan. 2014. “Cholinesterase Inhibitory Triterpenes from Perovskia Atriplicifolia”. Asian Journal of Chemistry 26 (18):6163-66. https://doi.org/10.14233/ajchem.2014.17001.