Srisombut, C. and Oehninger, S. (1998) “Sperm preparation for assisted reproduction”, Thai Journal of Obstetrics and Gynaecology. Bangkok, Thailand, 10(3), pp. 183–192. available at: https://he02.tci-thaijo.org/index.php/tjog/article/view/257065 (accessed: 29 September 2026).