Sharma, Mridula, and Anoop Singh. “Changes in Ultrastructure of Crossbred Bovine Spermatozoa in Butylated Hydroxytoluene Supplemented Semen”. International Journal of Livestock Research, vol. 9, no. 5, May 2019, pp. 64-69, https://ijlr.org/ojs_journal/index.php/ijlr/article/view/1253.