1. Gershon MD (1981): The enteric nervous system. Ann Rev Neurosci 4: 227–272.
2. Costa M, Furness JB, Llewellyn-Smith I (1987): Histochemistry of the enteric nervous system, pp. 1–41 in: Johnson LR (ed), Physiology of the Gastrointestinal TractVol 1, 2nd edition. New York: Raven Press.
3. Furness JB, Costa M (1987): The Enteric Nervous Systempp. 65–69. New York: Churchill Livingston.
4. Erspamer V (1966): Occurrence of indolealkylamines in nature, pp. 132–181 in: Erspamer V (ed), Handbook of Experimental PharmacologyVol 19, 5-Hydroxytryptamine and Related Indolealkylamines. New York: Springer-Verlag.
5. Gershon MD, Drakontides AB, Ross LL (1965): Serotonin: synthesis and release from the myenteric plexus of the mouse intestine. Science 149: 197–199.