Singh, J., Shah, R., Vaidya, N., Mahato, P., Shrestha, S. and Shrestha, B. (2013) “Comparison of Ketamine, Fentanyl and Clonidine as an Adjuvant During Bupivacaine Caudal Anaesthesia in Paediatric Patients”, Kathmandu University Medical Journal, 10(3), pp. 25–29. doi: 10.3126/kumj.v10i3.8013.