CHENCHEV, I., G. GEORGIEV, S. YORDANOV, и N. NEDELCHEV. «Serological Investigation of Equine Viral Arteritis (EVA) in Bulgaria». Journal of the Hellenic Veterinary Medical Society 60, no. 2 (ноябрь 20, 2017): 150–153. просмотрено июль 27, 2024. https://ejournals.epublishing.ekt.gr/index.php/jhvms/article/view/14923.