M. Datta, S. Chattopadhyay, and B. Biswas, “PERIOPERATIVE EFFECTS OF INTRATHECAL CLONIDINE AND FENTANYL WITH HYPERBARIC BUPIVACAINE IN SPINAL ANESTHESIA FOR VAGINAL HYSTERECTOMY”, Asian J Pharm Clin Res, vol. 9, no. 5, pp. 245–248, Sep. 2016.