N. P, S. S. K., D. C, and S. N. K., “Comparison of 0.2% Bupivacaine with 0.2% Ropivacaine in Femoral Nerve Block for Preoperative Positioning and Postoperative Analgesia in Femur Fractures”, Int J of Adv in Sci Res, vol. 2, no. 9, pp. 169–172, Oct. 2016, doi: 10.7439/ijasr.v2i9.3638.