1. Yamada S, Takai Y, Nemoto K, Ogawa Y, Kakuto Y, Hoshi A, Sakamoto K. Radiotherapy for esophageal carcinoma. J Jpn Soc Cancer Therapy. 1993;28:786–93 (in Japanese).
2. Nishio M, Yamada S, Shibuya H, Imanaka I, Kuribayashi T, Masuda K, Hareyama M, Ariga T, Akita W. Clinical results of radiotherapy for M0 esophageal cancer in Japan. 1992;27:912–24 (in Japanese).
3. Pearson JG. The value of radiotherapy in the management of esophageal cancer. Am J Roentgenol. 1969;105:500–13.
4. Abe M, takahashi M, Onoyama Y, Nishida T, Tsai PL. Radiotehrapy of carcinoma of the esophagus with special reference to the radical radiation. Nippon Acta Radiol. 1972;31:1264–69 (in Japanese).
5. Morita K, Mori T, Hayashi S. Radiotherapy of the esophageal cancer. Gan no Rinsho. 1974;20:199–206 (in Japanese).