Prayogo, D., S. Susilowati, R. A. . Prastiya, E. Safitri, and B. Agustono. “Difference Time Effect of Equilibration Before Freezing on The Quality of Spermatozoa Sapera Goats Using Egg Yellow Tris”. Jurnal Medik Veteriner, vol. 5, no. 2, Oct. 2022, pp. 188-95, doi:10.20473/jmv.vol5.iss2.2022.188-195.