Garg, K M, Satish K Garg, and M Sabir. 2005. “Pharmacological Evaluation of Phosphodiesterase Inhibitors As Potential Tocolytic Agents in Buffaloes (Bubalus Bubalis)”. The Indian Journal of Animal Sciences 75 (2). https://epubs.icar.org.in/index.php/IJAnS/article/view/8119.