Kaeoket, K., T. Srisowanna, U. Wichaidit, P. Chanapiwat, and S. Manee-in. “Comparative Study on Six Different Long Term Commercial Extenders for Fresh Boar Semen”. The Thai Journal of Veterinary Medicine, vol. 40, no. 3, Sept. 2010, pp. 257-63, https://he01.tci-thaijo.org/index.php/tjvm/article/view/35713.