Wongtawan, T., P. Samransarp, and P. Tummaruk. “INTRAUTERINE ARTIFICIAL INSEMINATION IN THE PIG: THE TECHNIQUES, THE APPLICATIONS AND THE LIMITATIONS”. The Thai Journal of Veterinary Medicine, vol. 35, no. 3, July 2015, pp. 11-20, https://he01.tci-thaijo.org/index.php/tjvm/article/view/36805.