Kaewprom, Kraijak, Yu-Hsin Chen, Chuen-Fu Lin, Ming-Tang Chiou, and Chao-Nan Lin. 2017. “Antiviral activity of Thymus vulgaris and Nepeta cataria hydrosols against porcine reproductive and respiratory syndrome virus”. The Thai Journal of Veterinary Medicine 47 (1):25-33. https://he01.tci-thaijo.org/index.php/tjvm/article/view/81491.