OBLITAS, F., P. A. CONTRERAS, H. BÖHMWALD, and F. WITTWER. “Effect of Selenium Supplementation on Blood Glutathione Peroxidase (GSH-Px) Activity and Weight Gain in Heifers”. Archivos de Medicina Veterinaria 32, no. 1 (June 30, 2000): 55–62. Accessed July 17, 2024. http://revistas.uach.cl/index.php/amv/article/view/4553.