K. B. . Rupera, B. N. Khara, V. R. Shah, and B. K. Parikh, “SUPRA-CLAVICULAR BRACHIAL PLEXUS BLOCK: ULTRA-SONOGRAPHY GUIDED TECHNIQUE OFFER ADVANTAGE OVER PERIPHERAL NERVE STIMULATOR GUIDED TECHNIQUE”, Natl J Med Res, vol. 3, no. 03, pp. 241–244, Sep. 2013.