Arunkumar Arumugam, Bharti Badlani, P. Singh, and S. Tripathi. “Efficacy of Clonidine As an Additive to Levobupivacaine for Epidural Anesthesia and Post-Operative Analgesia in Infraumbilical Surgeries – A Randomized and Double Blind Study”. Asian Journal of Medical Sciences, vol. 13, no. 10, Oct. 2022, pp. 47-53, doi:10.3126/ajms.v13i10.45813.