Phiri, E.C.J., and A.E. Pereka. “The Effect of Mineral Glass Boluses Supplementation on Plasma Copper, Ceruloplasmin, Glutathione Peroxidase and Other Parameters in Grazing Heifers”. Tanzania Veterinary Journal 18, no. 2 (June 30, 1998): 136–144. Accessed August 3, 2026. https://tvj2.sua.ac.tz/vet2/index.php/TVJ/article/view/452.