Ahmadi, M. R., M. Haghkhah, H. R. Gheisari, and M. Yavari. “Comparison of Clinical Signs and Bacterial Isolates of Postpartum Endometritis in Holstein Dairy Cows in Iran”. Veterinary Science Development, vol. 7, no. 1, Dec. 2017, doi:10.4081/vsd.2015.6083.