Deepa Allolli, G S Mahishale, B Rajendrakumar, and Nazeer Ahmed K. “Comparison of Dexmedetomidine and Fentanyl As Intrathecal Adjuvants to 0.5% Hyperbaric Bupivacaine for Lower Abdominal Surgery Under Subarachnoid Block”. Academia Anesthesiologica International, Vol. 5, no. 2, Dec. 2020, pp. 196-00, https://aijournals.com/index.php/aan/article/view/1875.