Bhushan, S. B., J. S. Suresh, S. R. Vinayak, and J. N. Lakhe. “Comparison of Different Doses of Clonidine As an Adjuvant to Intrathecal Bupivacaine for Spinal Anesthesia and Postoperative Analgesia in Patients Undergoing Caesarian Section”. Anaesthesia, Pain & Intensive Care, Feb. 2019, pp. 266-72, https://mail.apicareonline.com/index.php/APIC/article/view/527.