Dr. Hayfaa L. Sawdi. “Optimization Of Conditions For Enhanced Removal Of Copprer Onto The Granular Tribulus Terreststris Herble”. Drugs and Cell Therapies in Hematology, vol. 10, no. 1, Sept. 2021, pp. 2035-47, http://www.dcth.org/index.php/journal/article/view/384.