G. CHANDRA, A. AGGARWAL, A. K. SINGH, and M. KUMAR, “Effect of vitamin E and zinc supplementation on liver enzymatic profile of pre- and post-partum Sahiwal cows”, Indian J of Anim Sci, vol. 84, no. 5, pp. 507–510, May 2014, doi: 10.56093/ijans.v84i5.40650.