Sakthivel, R. N., B. P. puvula Subramanyam, and V. Balakrishnan. “A Study of Hip Arthroplasty Using Bipolar Endo-Prothesis for Fracture Neck of Femur”. International Journal of Research in Medical Sciences, vol. 4, no. 2, Dec. 2016, pp. 465-71, doi:10.18203/2320-6012.ijrms20160297.