Zainab, F., M. O. Faruq, M. Talukder, S. Yeasmeen, A. S. Alam, and A. F. Haque. “Anaesthetic and Analgesic Eects of Adding Fentanyl to Bupivacaine-Lignocaine Mixtures in Supraclavicular Brachial Plexus Block – a Comparative Study With or Without Fentanyl”. Bangladesh Medical Journal, vol. 44, no. 1, Jan. 2016, pp. 26-31, doi:10.3329/bmj.v44i1.26348.