Thavani, K.L., et al. “Incidence And Clinical Factors Of Retention Of Fetal Membranes In Dairy Bovines Of Anand District ”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 7, no. 2, Oct. 2011, pp. 51-54, https://acspublisher.com/journals/index.php/ijvsbt/article/view/3244.