Suresh Kumar, R, T Sarath, T Umamageswari, T Rangasamy, N Arunmozhi, C Pugazharasi, and K Krishnakumar. “Pregnancy Monitoring Using Four-Dimensional (4d) Ultrasonography in Bitches: Pregnancy Monitoring Using Four-Dimensional (4d) Ultrasonography in Bitches”. Indian Journal of Veterinary and Animal Sciences Research 50, no. 1 (October 28, 2025): 45–51. Accessed July 16, 2026. https://epubs.icar.org.in/index.php/IJVASR/article/view/126540.