Poonsuk, K., Arunorat, J., Woonwong, Y., Sitthicharoenchai, P., Jittimanee, S., Choojai, P. and Thanawongnuwech, R. 2014. Antiviral Activity of Four Commercial Tilmicosin Preparations against Porcine Reproductive and Respiratory Syndrome Virus (PRRSV): An In Vitro Study. The Thai Journal of Veterinary Medicine. 44, 2 (Jun. 2014), 217–222.