Vongpralub, T., P. Thananurak, C. Sittikasamkit, P. Chuawongboon, M. Duangjinda, W. Boonkum, and V. Chankitisakul. “Comparison of Effects of Different Antioxidants Supplemented to Long-Term Extender on Boar Semen Quality Following Storage at 17ºC”. The Thai Journal of Veterinary Medicine, Vol. 46, no. 1, 1, pp. 119-26, https://he01.tci-thaijo.org/index.php/tjvm/article/view/49791.