1. A prospective randomised study comparing forceful dilatation and esophagomyotomy in patients with achalasia;Csendes, A.; Velasco, N.; Braghetto, I.; Henriquez, A.
2. An uncontrolled comparison of treatment for achalasia;Yon, J.; Christensen, J.,1975
3. Esophagotomy versus forceful dilatation for achalasia of the esophagus: results in 899 patients;Okike, N.; Payne, W.S.; Neufeld, D.M.;Ann Thorac Surg,1979
4. Achalasia of the esophagus. A reappraisal of esophagomyotomy vs forceful pneumatic dilatation;Arvanitakis, C.;Dig Dis,1975
5. Treatment of achalasia with pneumatic dilatation;Bennett, JR, Hendrix T.R.,1970