Hernández, P., R. Fernández, S. Rodríguez, R. Juárez, M. Soto, and R. García. “Effect of Cryopreservation of Sheep Semen Related to Its Viability and Acrosomal Status”. Revista De Salud Animal, vol. 34, no. 2, Mar. 2013, p. 78, https://revistas.censa.edu.cu/index.php/RSA/article/view/22.