1. The oesophago-gastric sphincter after cardiomyotomy;Atkinson, M.;Thorax,1959
2. Problems of achalasia;Barlow, D.;Brit. J. Surg,1961
3. The late results of Heller's operation for cardiospasm;Douglas, K.; Nicholson, F.;Ibid,1959
4. The surgical management of achalasia of the esophagus;Hawthorne, H.R.; Frobese, A.S.; Nemir, Jr, P.;Ann. Surg,1956
5. Gastroesophageal sphincteric function after the Heller myotomy and its modifications;McVey, J.L.; Schlegel, J.F.; Ellis, Jr, F.H.;Bull. Soc. int. Chir,1963