Pathak, Rekha, et al. “Comparative Study On Xylazine, Bupivacaine And Buprenorphine With Ketamine As Lumbosacral Spinal Analgesia In Uremic Buffalo Calves ”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 8, no. 3, Jan. 2013, pp. 10-14, https://acspublisher.com/journals/index.php/ijvsbt/article/view/3169.