A. K. Sengupta, B. Bhattacharjee, M. N. Sharmin, M. Bari, and M. Hai, “A comparative study of locally advanced oesophageal squamous cell carcinoma by radiation versus concurrent chemo-radiation”, Khwaja Yunus Ali Medical College Journal, vol. 2, no. 1, pp. 114–117, Jan. 2013.