1. Watkins, J. C. & Evans, R. H. A. Rev. Pharmac. Tox. 21, 165–204 (1981).
2. Johnson, J. L. Prog. Neurobiol. 10, 155–202 (1978).
3. Watkins, J. C. . in Amino Acid Neurotransmitters (eds DeFeudis, F. V. & Mandel, P.) 205–212 (Raven, New York, 1981).
4. Watkins, J. C., Davies, J., Evans, R. H., Francis, A. A. & Jones, A. in Glutamate as a Neurotransmitter (eds DiChiara, G. & Gessa, G. L.) 263–273 (Raven, New York, 1981).
5. MacDonald, J. F. & Porietis, A. V. Brain Res. 245, 175–178 (1982).