1. Evaluation of the various methods of demonstrating a hiatus hernia;Boyd, J.W.; Harris, J.R.; Butler, E.B.; Donaldson, S.W.;Amer. J. Roentgenol,1956
2. An evaluation of the toe-touch position in the diagnosis of hitatus hernia;Carmichael, J.H.E.;Brit. J. Radiol,1959
3. Oesophageal reflux: an analysis of 453 consecutive barium meal examinations;Conway-Hughes, J.H.L.;Ibid,1956
4. Oesophageal hiatus hernia (with special reference to its X-ray diagnosis);Eisen, D.;Canad. med. Ass. J,1938
5. Hiatal hernia: Its diagnosis and clinical significance;Hafter, E.;Amer. J. dig. Dis,1958