1. Diagnostik und Therapie der Achalasie;Wienbeck, M.;Internistische Welt,1978
2. Achalasia of the esophagus in a small community;Earlam, R.J.; Ellis, F.H.; Nobrega, F.T.
3. Discordance for achalasia in identical twins;Eckrich, J.D.; Winans, C.S.;Dig Dis Sci,1979
4. Achalasia in the esophagus;Ellis, F.H.; Olsen, A.M.,1969
5. Familial glucocorticoid deficiency with achalasia of the cardia and deficient tear production;Allgrove, J.; Clayden, G.S.; Grant, D.B.;Lancet,1978