Gad, Basem A., et al. “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://www.advetresearch.com/index.php/AVR/article/view/268.