Gad, B. A., M. M. kandiel, A. I. El-Azab, G. A. Sosa, and S. A. Essawy. “Ultrasonographic Monitoring of Uterine Involution in Postpartum Buffalo Cows: Uterine Involution in Buffaloes”. Journal of Advanced Veterinary Research, vol. 7, no. 4, Oct. 2017, pp. 93-99, https://advetresearch.com/index.php/AVR/article/view/268.