1. Adamson, W. A. D., and J. Aird: Megacolon: Evidence in favour of a neurogenic origin. Brit. J. Surg. 20, 220?233 (1932).
2. Berger, H.: Das große atonische Colon bei gewissen Obstipationsformen der Kinder und seine Behandlung mit Sympathicolytica. Ann. paediat. (Basel) 178, 187?206 (1952).
3. Bodian, M.: Chronic constipation in children with particular reference to Hirschsprung's disease. Practioner 169, 517?529 (1952).
4. ??, and B. C. H. Ward: Hirschsprung's disease and idiopathic megacolon. Lancet 1949 I, 6?11.
5. Bülbring, E.: Smooth muscle of the alimentary tract. In: Modern trends in gastro-enterology, 2nd ser. edit. by F. Avery Jones. New York: Paul B. Hoeber 1958.