S. K. SRIVASTAVA, U. SHANKER, S. K. AGARWAL, and K. L. SAHNI, “Effect of oestrus cervical mucus peroxidase and fern pattern on fertility in crossbred cows”, Indian J of Anim Sci, vol. 70, no. 8, Jan. 2014, Accessed: Oct. 24, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/36192