In vitro fertilization with in vitro developed oocytes: the impact of heparin on the viability of frozen-thawed bull sperm. International Journal of Life Sciences Biotechnology and Pharma Sciences, [S. l.], v. 15, n. 1, p. 9–12, 2019. Disponível em: https://ijlbps.net/index.php/ijlbps/article/view/77. Acesso em: 12 mar. 2026.