Fahim, N. H., and T. A. Imbabi. “Comparison Between the Brix Refractometer and ELISA for Assessment of Colostrum IgG of Montbeliard x Holstein Cross Dairy Cows”. Tropical Animal Science Journal 44, no. 3 (August 19, 2021): 356–362. Accessed March 20, 2026. https://journal.ipb.ac.id/tasj/article/view/33398.