Naef AP, Savary M, Ozzello L, Columnar-lined lower esophagus: an acquired lesion with malignant predisposition. Report on 140 cases of Barrett esophagus with 12 adenocarcinomas, in J. Thorac. Cardiovasc. Surg., vol. 70, n. 5, novembre 1975, pp. 826–35, PMID1186274.