1. The mechanism at the cardia: A symposium;Berridge, F.R.,1961
2. Radiological localisation of the diaphragmatic hiatus;Botha, G.S.;Muller,1957
3. Mucosal folds at the cardia as a component of the gastro-oesophageal closing mechanism;Botha, G.S.;Muller,1958
4. Hiatus hernia. An anaesthetic hazard;Dinnick, 0. P;Lancet,1961
5. Pathology of a lower esophageal ring. Report of a case with autopsy, observed for 9 years;MacMahon, H.E.; Schatzki, R.; Gary, J.E.;New Engl. J. Med,1958