Amrith Kumar, M. N., B. V. Bhaskar, R. Nagarcenkar, and S. R. Sampath. 1973. “Study on the Effect of Supplementation of Copper, Cobalt and LIV-52 LN the Ration of Heifers”. The Indian Journal of Nutrition and Dietetics 10 (3):139-47. https://informaticsjournals.co.in/index.php/ijnd/article/view/10735.