1. Cancer of the esophagus;Pope,1983
2. Tumours of the oesophagus;Celestin,1984
3. Tumours of the esophagus. General considera tions;Livstone,1985
4. Diseases of the gastrointes tinal tract and liver;Shearman,1982
5. Cytologic diagnosis of digestive cancer. VI. World Congress of Gastroenterology Quadriennal Reviews;Cabré-Fiol;Rev Esp Enf Ap Digest,1978