Hazarika, R., T. Rajkhowa, M. P. Nath, and S. Parua. “A Comparison of Two Approaches to Brachial Plexus Anaesthesia”. International Journal of Research in Medical Sciences, vol. 4, no. 5, Dec. 2016, pp. 1335-8, doi:10.18203/2320-6012.ijrms20160986.