“Comparison Of External Beam Radiotherapy Followed By Intra-Luminal Brachytherapy With External Beam Radiotherapy Alone In Locally Advanced Carcinoma Of Esophagus”., int.jour.sci.res.mana, vol. 5, no. 12, pp. 7644–7651, Dec. 2017, doi: 10.18535/ijsrm/v5i12.11.