Ali, Samir Humeida, et al. “Sexual Behavior and Semen Quality of Crossbred Bulls After Supplementation of Flaxseed and With Rubber Mat Floor”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 17, no. 3, Aug. 2021, pp. 65-68, https://acspublisher.com/journals/index.php/ijvsbt/article/view/2293.