1. Thompson, S. M. & Adams, J. Physical Hydrology—New Zealand Experience (eds Murray, D. L. & Ackroyd, P.) 213–229 (New Zealand Hydrological Society, Wellington, 1979).
2. Christian, R. & Thompson, S. M. J. Hydrol. N.Z. 17, 50–53 (1978).
3. Adams, J. thesis, Victoria Univ. Wellington (1978).
4. Adams, J. J. Hydrol. N.Z. 18, 36–48 (1979).
5. Griffiths, G. A. Nature 282, 61–63 (1979).