Mokhtari, A. , and mahzonieh, M. . "The first study of bovine immunodeficiency virus (BIV) and bovine viral diarrhea virus (BVDV) co- infection in industrial herds of cattle in two provinces of Iran", Iranian Journal of Veterinary Medicine, 8, 1, 2014, 27-33. doi: 10.22059/ijvm.2014.50561