1. Auerbach, L.: Fernere vorläufige Mittheilung über den Nervenapparat des Darmes. Arch. Pathol. Anat. 30:457–460 (1864).
2. Bacq, Z. M.: Chemical Transmission of Nerve Impulses. Pergamon Press, Oxford (1975).
3. Bard, P.: The central representation of the sympathetic nervous system as indicated by certain physiologic observations. Arch. Neurol. Psychiatry 22:230–246 (1929).
4. Barsoum, G. S., Gaddum, J. H., and Khayyal, M. A.: The liberation of a choline ester in the inferior mesenteric ganglion. J. Physiol. (London) 28:9–10P (1934).
5. Bernard, C.: De l’influence du système nerveux grand sympathique sur la chaleur animale. C. R. Acad. Sci. 34:472 (1852).