1. Achalasia of the Esophagus;Ellis,1969
2. A comparative study of naturally occurring canine achalasia;Hoffer;Arch Surg,1967
3. Diseases of the canine esophagus due to a prenatal influence;Clifford;Am J Dig Dis,1969
4. Esophageal “achalasia” in the dog: manometric characteristics of body and sphincters (abstr);Diamant;Gastroenterology,1972
5. “Cardiospasm” in achalasia: demonstration of an abnormally elevated esophagogastric sphincter pressure with partial relaxation on swallowing;Cohen;Gastroenterology,1965