1. Bayliss, M., Wu, C., Newgreen, D., Mundy, A.R. and Fry, C.H. (1999). A quantitative study of atropine-resistant contractile responses in human detrusor smooth muscle, from stable, unstable and obstructed bladders. J. Urol. 162: 1833–1839.
2. Braverman, A.S., Kohn, I.J., Luthin, G.R. and Ruggieri, M.R. (1998a). Prejunctional M1 facilitory and M2 inhibitory muscarinic receptors mediate rat bladder contractility. Am. J. Physiol. 274: R517–R523.
3. Braverman, A.S., Luthin, G.R. and Ruggieri, M.R. (1998b). M2 muscarinic receptor contributes to contraction of the denervated rat urinary bladder. Am. J. Physiol. 275: R1654–R1660.
4. Burnstock, G. (2009). Purinergic cotransmission. Exp. Physiol. 94: 20–24.
5. Callahan, S.M. and Creed, K.E. (1986). Non-cholinergic neurotransmission and the effects of peptides on the urinary bladder of guinea-pigs and rabbits. J. Physiol. (Lond.) 374: 103–115.