Islam, Md Mohirul, et al. “Duck Virus Enteritis (duck Plague) Outbreak in an Australian Black Swan (Cygnus Atratus) Flock at Safari Park in Bangladesh: A Case Report”. Journal of Advanced Veterinary and Animal Research, vol. 8, no. 4, Oct. 2021, pp. 557-62, https://banglajol.info/index.php/JAVAR/article/view/79819.