K. M. Garg, S. K. Garg, and M. Sabir, “Pharmacological evaluation of phosphodiesterase inhibitors as potential tocolytic agents in buffaloes (Bubalus bubalis)”, Indian J of Anim Sci, vol. 75, no. 2, Feb. 2005, Accessed: Oct. 23, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/8119