Vijatrasil, S., and U. Bojarus. “The Comparative Study of the Human Sperm Hypoosmotic Swelling Test and Routine Semen Analysis”. Thai Journal of Obstetrics and Gynaecology, vol. 5, no. 1, Jan. 1993, pp. 39-44, https://he02.tci-thaijo.org/index.php/tjog/article/view/257823.