Joram, J. G., Balagan, E. J. Y., Fely, V. M., Anaois, I. I., Ocampo, M. B., and Ocampo, L. C. “Characteristics of epididymal sperm recovered from slaughterhouse derived testes of nondescript/native goats in the Philippines”. International Journal of Agricultural Technology, vol. 12, no. 2, Mar. 2016, pp. 215-28, https://li04.tci-thaijo.org/index.php/IJAT/article/view/6587.