1. Achalasia and other diseases associated with disorders of gastrointestinal motility;Mayberry;Hepatogastroenterology,1986
2. Achalasia of the cardiac sphincter and the pylorus?;Kalsbeek;Neth J Surg,1980
3. Achalasia ofthe cardia;Adams;Guy’s Hospital Reports,1961
4. Motor functions of the pharynx and esophagus;Christensen,1987
5. The lower esophageal sphincter;Goyal;Viewpoints on Digestive Diseases,1976