1. Costa M, Furness JB: Nervous control of intestinal motility.In Handbook of Experimental Pharmacology. G Bertaccini (ed). Berlin, Springer, 1982, Chap 10
2. Costa M, Furness JB, Llewellyn-Smith IJ: Histochemistry of the enteric nervous system.In Physiology of the Gastrointestinal Tract, LR Johnson (ed). New York, Raven, 1987, Chap 1
3. Dockray GJ: Physiology of enteric neuropeptides.In Physiology of the Gastrointestinal Tract. LR Johnson (ed). New York, Raven, 1987, Chap 2
4. Furness JB, Costa M: Identification of gastrointestinal neurotransmitters.In Handbook of Experimental Pharmacology, Vol 59/1. G Bertaccini (ed). Berlin, Springer, 1982, Chap 11
5. Keast JR, Furness JB, Costa M: Distribution of certain peptide-containing nerve fibers and endocrine cells in the gastrointestinal mucosa in five mammalian species. J Comp Neurol 236:403?422, 1985