Gautam, B., S. M. Lama, and M. Sharma. “Effects of Adding Intrathecal Dexmedetomidine to Hyperbaric Bupivacaine for Saddle Spinal Block in Adults Undergoing Peri-Anal Surgeries”. Journal of Nepal Health Research Council, vol. 16, no. 1, Mar. 2018, pp. 43-48, https://nepjol.info/index.php/JNHRC/article/view/19362.