P. RATWAN, A. K. CHAKRAVARTY, M. KUMAR, N. SHARMA, and P. JOSHI, “Genetic analysis of first lactation test day traits in Sahiwal cattle”, Indian J of Anim Sci, vol. 90, no. 1, pp. 99–101, Feb. 2020, doi: 10.56093/ijans.v90i1.98236.