Adhikary, K., S. jha, R. Ghimire, and S. Pradhan. “Comparison of Plain X-Ray Finding of Ventricular Enlargement With Echocardiography”. Nepalese Heart Journal, vol. 2, no. 2, Dec. 2003, pp. 26-38, doi:10.3126/njh.v2i2.26035.