Hasan, M. M. I., M. Hasan, M. H. O. Rashid, M. Rahman, M. S. Rahman, and N. S. Juyena. “Standard Feeding Strategies With Natural Insemination Improved Fertility in Repeat Breeding Dairy Cows”. Journal of Advanced Veterinary and Animal Research, vol. 8, no. 2, June 2021, pp. 282-90, https://banglajol.info/index.php/JAVAR/article/view/76263.