Kaeoket, K., and P. Chanapiwat. “DHA Analysis in Different Types of Egg Yolks: Its Possibility of Being a DHA Source for Boar Semen Cryopreservation”. The Thai Journal of Veterinary Medicine, vol. 43, no. 1, June 2013, pp. 119-23, https://he01.tci-thaijo.org/index.php/tjvm/article/view/9564.