Yu, C.-H., K. Kaewprom, C.-C. Chang, M.-T. Chiou, and C.-N. Lin. “Genetic Evolution of Porcine Reproductive and Respiratory Syndrome Virus Based on ORF5 on 7 Taiwanese Pig Farms”. The Thai Journal of Veterinary Medicine, vol. 49, no. 2, June 2019, pp. 167-74, https://he01.tci-thaijo.org/index.php/tjvm/article/view/224206.