Rao, V. R. M., M. S. S. Reddy, A. S. Chandra, and P. K. Prasad. “A Study of Open Surgical Approach for Common Bile Duct Stones”. International Surgery Journal, vol. 3, no. 1, Dec. 2016, pp. 90-95, doi:10.18203/2349-2902.isj20151510.