Elhassan, Amira Mohamed, et al. “Bovine Herpes Virus-1 (BoHV-1) Detection in Dairy Cattle With Reproductive Problems in Sudan”. Journal of Advanced Veterinary and Animal Research, vol. 2, no. 2, May 2015, pp. 185-9, https://banglajol.info/index.php/JAVAR/article/view/23217.