Zokaei, Maryam, Masoud Sepehri, Aniseh Zarei, and Fereshteh Jafari. 2018. “Determination of the Concentration of Heavy Metals in Medicinal Plants and Assessment of the Risk to Health”. Amazonia Investiga 7 (16):335-43. https://amazoniainvestiga.info/index.php/amazonia/article/view/417.