Mishra, P. K., A. K. Singh, and P. Divedi. “Comparative Study Between Levobupivacaine With Clonidine and Levobupivacaine With Fentanyl in Epidural Labour Analgesia in Rural Set up”. International Journal of Research in Medical Sciences, vol. 5, no. 9, Aug. 2017, pp. 4087-92, doi:10.18203/2320-6012.ijrms20173988.