1. Morris JL, Bibbins IL (1992) Co-transmission and neuromodulation. In: J Burnstoc, CHV Hoyle (eds): Autonomic Neuroeffector Mechanisms. Harwood Academic Publisher, Reading UK, 33–119
2. White TD (1991) Role of ATP and adenosine in the autonomic nervous system, In: C Bell (ed.): Novel Perpheral Neurotransmitters. Pergamon Press, 9–64
3. Potter E (1991) Neuropeptide Y as an autonomic transmitter, In: C Bell (ed.): Novel Perpheral Neurotransmitters. Pergamon Press, 81–112
4. Lundberg JM (1996) Pharmacology of cotransmission in the autonomic nervous system: Integrative aspects on amines, neuropeptides, adenosine triphosphate, amino acids and nitric oxide. Pharmacol Rev 48: 113–178
5. Westfall TC (2004) Prejunctional effects of neuropeptide Y and its role as a cotransmitter. Handbook of Exp Pharmacol 164: 138–183