P., S., & G. V., K. P. (2018). Duration of analgesia, sensory and motor blockade and intra operative hemodynamic changes caused by intrathecal bupivacaine, bupivacaine plus clonidine and bupivacaine plus dexmedetomidine in spinal anesthesia: prospective, comparative study. International Journal of Research in Medical Sciences, 6(2), 493–502. https://doi.org/10.18203/2320-6012.ijrms20180287